Ganta Igarashi (五十嵐 丸太) a.k.a Woodpecker, is the main protagonist of the series. Because of his Deadman powers, he was sent to Deadman Wonderland. He is the son of Sorae Igarashi and the childhood friend of Shiro.
Ganta has black, messy hair, from which one lock of hair is always standing upwards. He has gray colored eyes. While still in school, he wore the school's uniform. In DW, he wears the standard prison khaki green overall, along with his neck collar. After a few days, he began wearing only the bottom part of his overall, tying the sleeves across his middle. Instead, he wore a black t-shirt.
In the beginning of the series, Ganta is a harmless and ordinary school boy. Once in DW, he is initially confused and frightened by the brutality of the prison. During his time in prison, he learns to live with the insanity, but is still determined to stop Tamaki's tyranny. He is also quite vengeful, seeking retribution for the death of his classmates at the hands of the Red Man for most of the series.
Ganta cares a great deal for his friends and allies. It is later revealed that he actually has strong feelings of love towards Shiro and that the feelings are mutual. This causes great confusion with Ganta when he is confronted with the absolute need of killing Shiro.
Birth name Maruta, Ganta was originally concived by his mother Sorae in order for her to continue her research with human testing. Shortly, after his birth his presense awakens the maternal instincts within his mother. Hagire meets with Sorae in the maternity ward and rejoices at the thought of continuing his expirements and goes off to prepare. Soon afterward, Sorae had begun regret her choice of using her child as a subject for her experiments. After a conversation with her lab assistant and presumably Ganta's biological father who offers to take the child and leave, Sorae procures another child to be used as a test subject in his place, Shiro.
When he was little, Ganta lived with his mother at the research institute where Shiro was being experimented on. He met the girl and told her he liked her hair and became her friend and playmate.
However, he did not know the torture his mother and Hagire Rinichirō put her through so he did not understand when she lashed out at him in pain and broke his Aceman doll, causing him to reject her. However, she saved him from a rabid dog and their friendship became stronger.
Another time, Shiro accidentally hurt him with her strength when they were playing, but he impressed her when he stood back up.
Ganta is first seen sitting in class while looking at an ad for Deadman Wonderland on his cellphone. Mimi walks towards him and asks what he is doing. He replies that he has been thinking about the class trip, that he thinks that it is 'kinda lame' to go to a prison. Mimi says that he's from Tokyo and that it might even be nostalgic. Ganta says that he doesn't remember anything from that time. Yamakatsu joins the conversation and they make small talk. Mimi returns to the subject of the class trip and says that it doesn't matter where they're going. She says that wherever they go, it's all about having fun. The bell rings and they get to their seats. It's at that time that Ganta began hearing the lullaby. He looks out the window and sees the Red Man floating outside. Ganta is shocked and the Red Man attacks with her Branch of Sin. Ganta faints afterward.
When Ganta awakens, he sees Mimi. He asks if she's alright, but he realizes that he's only seeing Mimi's head, severed from her body. He looks further and sees the Red Man grabbing Mimi's head by her hair. He looks around and sees his entire class murdered. Ganta is shocked and crawls away from the Red Man, who is standing before him. The Red Man approaches him and Ganta panics, thinking that he is going to die. The Red Man summons a Red Diamond and shoots it into Ganta's chest. Again, Ganta falls unconscious.
He wakes up in a hospital-bed, with policemen entering the room. They tell him that they will arrest him as the primary suspect for the murders. Tamaki moves forward and gives Ganta his card, telling him he's a lawyer. The police officers take him out of the room, but Ganta resists. He tells them he didn't do it and remembers the Red Diamond. He unbuttons his shirt, trying to show his wound, but his chest is untouched. He later meets with Tamaki, talking about his defense.
The next we see of Ganta, he is in the courtroom, facing trial. The court sentences Ganta to death. Ganta is then seen sitting in the bus, going to prison.
In the anime, this was slightly altered. Rokuro created a short movie as ordered by Tamaki, supposedly shot from a hidden camera in his office. This shows how Tamaki talked to Ganta and Ganta confessing to all his crimes. The court acknowledges this as evidence and sentences Ganta to death at DW. At this point Mimi's father burst out in rage and attacks Ganta. He blames him for his daughter's death and punches him. The guards remove him and Ganta is left alone in despair.
He arrives in DW, lines up with the other prisoners, who notice him and recognize him as the mass murderer. Makina introduces herself and explains Deadman Wonderland. When Makina ends her speech, Ganta looks inside his bag with the primary necessities in it. Then, Yō bumps into him with a cart. Yō apologizes and rushes to Ganta. Makina intervenes and tells Yō to return what he just stole (a Candy from Ganta's bag). Yō pretends he doesn't know about anything and Makina slashes him across the chest. Ganta shouts that this is wrong, that he didn't do anything, that her actions were twisted. Makina replies that reality is made to be unfair and unjust.
Ganta first meets and befriends Shiro when he was agitated by the fact that he was sentenced on death row, saying that he wanted to die (which he denies after Shiro comforted him). After picking a fight with other prisoners, leaving Shiro unconscious, the ball statue on top of a building begins to fall on top of them. To his fury of will to live, Ganta encounters his Deadman powers and destroys the boulder, saving them both.
The next day, he meets Azami Midō, she tells Ganta about Cast Points.
Knowing that he'll die the next day, Ganta decides that he can only survive if he won the Dog race and receive 100,000 cast points to buy a candy. During the Dog Race, Ganta was constantly "disturbed" by Shiro and therefore lagging behind. But soon after, he finds out that Shiro had been protecting him all along. Ganta then shows mercy and saves Shiro, but since the Dog Race can have only one winner, this means there is no winner.
As a Deadman, Ganta is forced to fight and survive in the Carnival Corpse under the moniker Woodpecker while trying to locate the Red Man, who apparently is held captive in Deadman Wonderland. Ganta's power, dubbed the Ganta Gun by Senji, allows Ganta to gather variable quantities of blood in the palm of his hand and then shoot them at high speed, as if they were bullets. While advantageous as a long-range attack, due to Ganta's small stature, this also puts him at risk of experiencing symptoms of excessive blood loss, however he was able to endure Senji's attacks and hit him with a point blank Ganta Gun, winning his first Carnival Corpse.
Ganta participated in Scar Chain's attempt to escape from DW, and helped several members escape along with video and audio evidence of the atrocities being committed below the prison. Ganta, however, chose to remain behind to continue his search for the Red Man. Shortly after these events, Ganta's power began to change, evident by a strange tattoo-like mark radiating out from the crystal in his chest. His Ganta Gun now emits a much more powerful blast than before, though it is much less controllable and causes him physical pain.
After the events of Scar Chain rebellion, Ganta is placed in the solitary confinement for one week, because he refused to tell anything about the escapees. After Nagi's death, Ganta fell in depression not wanting to eat. Later, he runs in to Senji, who he admits he`s scared of living every day with nothing changing, where Senji tells him that that's how a brat thinks. When he gets back to his room Shiro tries to cheer him up with a home-cooked meal. After seeing Shiro's meal full of sweets and spices, he realizes that every day thing will change a little bit more.
The next day, the G Ward is opened and the Deadmen can freely exit, Ganta goes to see Azami. He complements Azami for her circus performance with Kincho, her pet armadillo. A group of prisoners appear and start to bully Kincho, where Ganta uses his Branch of Sin to stop them. The prisoners, seeing Ganta's power, run away in fear, calling Ganta a monster, while on the other hand Azami is impressed and thanks Ganta.
When Ganta and Senji start training, Tamaki shows a live feed of the battle between two Deadmen, with one masked and having strange powers of Branch of Sin, where he convinces people that the Deadmen are monsters who want to kill and that he was trying to protect other people from them by keeping them a secret, while Ganta notices the similarity between the masked Deadmen and Azami. After this, Ganta meets Toto Sakigami who explains that the Deadmen they saw on the broadcast were Forgeries created for "Humanity's sake". After this, while everyone else celebrates Toto's return, Ganta hopes he mistook the masked Forgeries for Azami. Toto appears, trying to tell Ganta the "Red Man"'s identity, but before he can, he is interrupted by Shiro, who then leaves, while Ganta finds out hes having feelings for Shiro. Shiro asks Ganta if hes having fun and Ganta realizes that even though he lost his old friends, he gained some new friends.
The next day Ganta, along with Senji, Minatsuki, Chaplin, Idaki and the rest of G ward, find strange masks in their rooms. Inside, they were written with every persons trauma. They were sent by Tamaki to provoke them for tonight's Carnival Corpse. Ganta's stated "All of your friends, they pleased the red man so, thank you for all of their severed heads". Enraged, Ganta, as well as the other Deadmen, go to take on Tamaki, but are met with countless Forgeries that Tamaki placed for the Carnival Corpse. The Deadmen fight through the Forgeries when Ganta knocks one of the Forgeries mask, identifying Azami. Shocked, he lets down his guard and nearly getting killed, but is saved by Toto. When the rest of the Deadmen charge, he tries to stop them but accidentally fires Ganbare Gun, destroying the whole arena and injuring all of his comrades.
After 3 days of beeing unconscious, Ganta wakes up with Shiro who helps out Ganta. Learning what he did 3 days ago, he tries to apologize to his friends, but no one will accept his apology. After this, bunch of inmates start beating up Ganta because he is a Deadman, but Shiro stops them. Ganta notices that Shiro might be a Deadman too. Knowing that Shiro will go where ever Ganta goes, to keep her from danger, he says he hates her because she's a Deadman. While searching for Azami he gets caught in the girl's dormitory, where he is tricked by Makina to go after Azami. He encounters Azami who is controlled by Tamaki's mask, but Ganta manages to free her from his control. When they try to go back, they were stopped by Rei and the forgeries. Ganta hid Azami and told Rei that he had killed her, after which he is then captured for Rei to experiment on.
After being captured by the Forgeries, Ganta wakes up at a table full of food, where Tamaki tells him that Ganta's mother, Sorae Igarashi, worked alongside Hagire and accidentally created the Wretched Egg. Tamaki wants for Ganta to join him to destroy Wretched Egg. Ganta refuses, because Tamaki uses people as weapons and says he will kill the Red Man himself. When he refuses, he is captured and used as an experiment. After being tortured by Rei, a strange man known as Madoka appears and gives him a drink, that has Madoka`s blood to control five senses, that stops his pain. After Tamaki lets the Forgeries go on a rampage, Ganta tries to stop them, telling them they're being controlled, but they attack Ganta, saying that they're in heaven. They are suddenly stopped by Shiro and Azami. They try to rescue Ganta but a Forgery tries to kill Shiro, who is then stopped by Makina with her Worm Eater sword.
Makina tells them that there is a device that controls the Forgeries and in order to stop them, they need to destroy it. On their way to destroy the machine, Ganta, Shiro and Azami are confronted by Hajime, Ikaduchi and Uzume, the Complete Forgeries. They try to kill Ganta but are stopped by Crow, Chaplin, Idaki and Minatsuki. They still refuse to accept Ganta`s apology and are still angry at him, but agree to assist him in taking out the Forgeries while Ganta, together with Shiro and Azami, advance to destroy the control device before its too late. On their way, they find Madoka crying. He says there's nothing wrong and tells Ganta he did not know he had two girlfriends, which Ganta denies. Madoka then volunteers to show them the control device.
When they finally arrive, Madoka commends Ganta about how brave, innocent and courageous he is and that he is a wonderful person. However, he reveals that he must kill him, or else the world will never be peaceful and the reason why he can`t resist Tamaki's orders is because, instead of masks, he has receivers implanted in his head that act exactly like masks. Madoka uses his Branch of Sin, Jūshin Shinjū, which has the ability to control the target's five senses. He paralyzes Shiro and Azami and uses his poison to torture Ganta, giving him a sense of being hit by a truck and crucifixion. When Ganta finally defeats Madoka and destroys the control device, Madoka says that the main control over the Forgeries is switched over to Tamaki. After seeing Ganta struggle so much to protect others, Madoka says that he is not well, because feeling pain and misery makes him happy and for someone to be happy, others need to be unhappy. That`s why Madoka tries to be a "rubbish bin". Shiro, not wanting Ganta to suffer, breaks out of Madoka`s paralyses and uses her branch of sin to try and stop him. She fails and is put under Madoka`s poison " Iron Maiden." Shiro, screaming in agony, enrages Ganta to beg Madoka to let her go and kill him instead, but he decides to torture Shiro, because it brings Ganta great agony. As Shiro collapses, Ganta uses his Ganbare Gun, but Madoka uses his " Jūshin Shinjū: Jaws of Demise " earlier then Ganta and just as he`s about to kill him, Shiro uses her branch of sin and slices Madoka's Jūshin Shinjū. Madoka dies at the hands of Ganta`s Ganbare Gun, wondering why they were still mobile while under excessive pain, while Azami is surprised that even after everything they just experienced, they still bear a smile. Both Shiro and Ganta confess there love for one another. Makina informs the trio of the whereabouts of Tamaki, when Ganta replies that he will no longer try to save everyone, but he will try to stop and kill Tamaki, including the Forgeries.
As Ganta is about to depart, he leaves unconscious Shiro at Azami's hands and tells her to take Shiro to Yo, since he is more skilled with medicine. Wounded and exhausted, Ganta uses all of his might to continue. When he gets to the passage that Tamaki took, he finds Rei and the Forgeries slaughtered by the Red Man. When he arrives, he finds Tamaki convicted suicide, Makina injured and the twins with Toto alongside the Wretched Egg. Ganta bursts in rage trying to kill the Red Man to no avail while the latter satanically laughs. Makina uses Necro Macro to try and stop The Red Man but it gets destroyed. She tells Ganta that he should run and that he shouldn't die alone, but Ganta desperately wants to avenge his friends. When he turns around, he sees the Red Man clutching Azami`s decapitated head. Ganta, in terrible shock, starts wondering why did his friends have to die. Makina uses gasoline to try and burn down the Wretched Egg, where she appears behind Ganta. Ganta, after seeing Azami`s dead, questions Shiro's whereabouts, with the Wretched Egg replying that Shiro is dead. After attacking Ganta, he falls in to a huge pit where he uses his Ganbare Gun. While the Red Man fights back, Toto replies that the "original" sin cannot disappear. The Ganbare Gun breaks the Red Man`s attack and knocks off her helmet. Shocked to find out that the Red Man is actually Shiro, Toto and the rest retreat, leaving Ganta wounded mentally and physically. After the battle, the Forgeries were all captured with some killed, most of their comrades were wounded, Makina becomes bound to a wheel chair and all of the dead bodies, including Azami's, were wrapped in bags and taken to a burial. Deadman Wonderland has been permanently shutdown and the rest of the prisoners were either emancipated or transferred to a regular prison.
In the end, Ganta is finally cleared of all false charges and set free. However, he is left with no where to go, and was forced to live in the Minori Garden orphanage. Ganta is depressed due to everything he had experienced. When the prison returned his belongings, he said that he didn't have anyone to call nor did he want to talk to anyone. After a while, Karako comes to visit Ganta. She explains how she's working along side Makina and she wants him to help them out. Ganta refuses because he wants to forget everything about Deadman Wonderland. He asks Karako how she felt when she saw Nagi's true self. She says that she never knew nor that she wanted to know, but there's no other way to see it other than yourself. Before she leaves, she tells Ganta that they won't force him nor can they decide what he wants to do, but they will be waiting in hopes that he changes his mind.
Not being able to forget everything he saw and experienced, he attends the meeting, where Makina tells the Deadman how it all started, about Hagire, Wretched Egg, the earthquake and the red crystals. Although she hides the fact that Ganta's mother, Sorae Igarashi, was also the masterming behind Wretched Egg. Finally she asks help from all of Deadman, who showed up to assist her, to go back to Deadman Wonderland and kill Toto and The Wretched Egg, so that the incident that happened 10 years ago does not occur again. After 5 days, the Deadmen gather and Ganta is the last to show up. When they depart, Makina gives them a piece of paper where they are able to write down their will in case they die. Ganta shreds the paper, exclaiming that he didn't come back to die, but to kill the Wretched Egg, knowing that he will have to kill Shiro.
When they arrive, Shiro comes to greet Ganta, when he yells at her and asks why does she have to be the Wretched Egg. Shiro uses her branches of sin and pools out the Walfisch out of the water and onto the land. Ganta screams at her, saying that he will avenge all of his friends. The Wretched Egg questions Ganta whether he can kill Shiro as well. He says that he loves Shiro and that he doesn't want anyone to kill her, which is why he will personally kill her. Ganta fires a barrage of bullets that all hit Shiro, but she quickly regenerates. She says that todays game was boring and that she will be waiting for the continuation of the song. As she leaves, Idaki stops Ganta from going after her, stating that if he went after her, he would be killed.
After the incident, Makina explains that the Mother Goose System is meant to seal the Wreched Egg's powers and that the system is still operative. If the powers were not sealed, Tokyo would cease to exist. The main goal is to strengthen the power of the mother goose system to further weaken Shiro`s powers, so they need to collect Chorus Blocks in order to figure out the "key" on how to control the system. The Deadman are separated into groups of 3 where Ganta goes with Senji and a strange girl named Yosuga Mitsuzaki. She asks Ganta if he's going to kill Shiro because he doesn't understand her, which tempts Ganta to wonder if he even has the ability to understand her. When they find the Chorus Block, Senji notices that Ganta starts spacing out. Ganta says that he spent his entire childhood with Shiro, yet he still does not understand her.
Senji tells him that he should try to understand her first, but Ganta doesn't want to, because if he starts worrying, people might die again. Senji tells him that they should make a bet. He will flip his coin and if it lands on the lizard, nobody dies. Ganta says that he should stop joking around, but the coin lands on the lizard, giving Ganta a sense of relief. While Yosuga is resting, Toto appears and knocks her unconscious. He then appears before Ganta and Senji. He tells Ganta to come with him and that he doesn't want to kill him. When Ganta refuses, Toto attacks him. Senji tries to kill Toto, but he says that he is not the weakest one anymore and uses all of the branches of sin he had copied and quickly defeats Senji. He threatens Ganta, saying if he does not come with him, he will kill Senji. Ganta agrees and goes with him.
Toto prepares the machine to transfer his own memories into Ganta, for the sake of the "key" to unlock all of Wretched Egg`s powers by using Ganta`s branch of sin. Wretched Egg appears before Ganta. Terrified, Ganta prepares to fight, but Wretched Egg asks him if he is going to kill her. He replies that she is the enemy of his friend and she says that they are no longer friends, because Ganta doesn't kill his friends. In the middle of the conversation, Shiro's personality surfaces and takes over. She runs away crying and tells Ganta that it is alright if he hates her, because she hates herself as well. Toto shows up and says if he wants to know, he will tell him everything.
Toto reveals that he is actually Hagire Rinichirou, the mad scientist who created the Wretched Egg and that he is trying to recreate another Wretched Egg, but unlike Shiro, nano machines aren't stable and he could die in a few years. For this reason he is transferring his own memories to other people, so that he can extend his life. He also says that in order to get closer to Shiro, he needs strong Deadman like Toto Sakigami. The twins, Chan and En, use their branch of sin, "Hollow Swallow", in order to transfer Hagire`s memories in to Ganta. When the transfer starts, Hagire, through Chan and En`s branch of sin, shows Ganta the creation of the Wretched Egg. Ganta is shocked at how much Shiro had to suffer as a child, while Hagire only percieved this as an experiment, Sorae was in great pain of what she was doing to Shiro. Unable to handle the pain, Shiro manifests a second personality to cope with the pain, the Wretched Egg. While the experiments continue, Shiro develops the ability to control her blood and later to regenerate flesh. Hagire`s interest in her just keeps on growing and growing to the point where he calls it "love". One day, Shiro breaks loose and slaughters the scientists. Ganta, as a child, accidentally sees her and runs away in fear. Sorae sends Ganta away to his father and Ganta reveals that he does not know who Shiro is, unconsciously ridding her from his mind due to the shock.
Right when Hagire is about to take over Ganta`s body, Senji appears and cuts off the connection. Chan and En try to stop him, but are quickly beaten. He tries to get Ganta but is stopped by Hagire. Hagire tries to fight off Senji, where he uses his extended Crow Claws to break Ganta`s chamber. He orders Ganta to run and requests to let him be "cool" for once. Hagire orders Chan and En to retrieve Ganta and if he doesn't establish connection within the next 60 minutes, he will not recieve a second chance. Senji stops them using his Crow Claw barrier. While Senji and Hagire fight, Chan and En assist Hagire by using their "Hollow Swallow: Dance Macabre", which synchronizes their moves, but Senji still manages to defeat them, while Hagire chases Ganta. Hagire is stopped again by Senji. While running, Ganta realizes that he has been running away since he was a kid and nothing good came of it, so he decides to go back. While Hagire uses an unnamed branch of sin to defeat Senji, Hagire questions Senji why he is protecting Ganta, to which he replies that he is an honest kid, and strikes Hagire with his evolved branch of sin.
Before he can kill Hagire, Chan and En use themselves as shields to protect Hagire. Despite being in their way, Hagire attacks, killing the twins and shredding Senji`s right arm. When he is about to kill Senji, Ganta shoots a bullet piercing Hagire`s arm, saying that he's not a child and that he cannot run away anymore. Hagire attacks Ganta, which he then counters with Supersonic Ganta Gun. He then tries to finish off Hagire with Ganbare Gun but his chest, where the crystal is, starts to inflict pain again. Hagire launches Ganta outside and starts using all of his branches of sin to finish off Ganta while he is hanging from the edge, but is saved by Senji. Hagire catches up with Senji evading every one of his attacks, only to find out he was aiming to take down the Deadman Wonderland giant sign, but Hagire shreds it, feeling that he had seen that move before. He then remembers the Carnival Corpse match between Ganta and Senji, and right after Ganta uses his Ganbare Gun in close range, despite the pain, Hagire is sent flying back, to which Senji uses Crow Claw to slice off Hagire`s right limbs which also slices the tower, causing it to crash on Hagire.
After the battle, both Ganta and Senji, who are terribly wounded and lost a lot of blood, are taken back by their comrades to Walfisch. Karako starts operating on Senji, because hes wounds are life threatening, while Ganta, whose life is not at risk, lies unconscious. Karako also says that Senji will make it because of his strong will to live. Minatsuki asks about Ganta, where Yo states that his injuries are not the cause of " this " and shows them Ganta`s chest, were the crystal is located. Hes chest and a little bit of his right arm have burn scars. Kasuga states that the crystal, because its special, has always caused pain to Ganta, but up until now, the nameless worm started to eat through his muscles and nervous system and if Ganta keeps on using his abilities, he will die.
After 2 days of sleep, Ganta finally wakes up. He sees Senji without his right arm and feels like its his fault, but Senji thanks him and says that its thanks to him he managed to get away with this much. He also finds it cool that hes like Tange Sazen, famous fictional Japanese swordsman who just like Senji lost his right arm and eye. When Ganta`s away, Makina states to other Deadmen that Ganta wont recover, because his branch of sin, while controlling the blood it eats away tissue that he cant control consciously. If he continues using his branch of sin, he would later loose control over it because he would have lost all the important tissue, like hearth and brain.
A little after, Ganta gathers up everyone to tell them, while Hagire tried to steal his body, he was able to see Hagires memories. He saw that the seal on mother goose system can either be strengthened or released and to control it requires Ganta`s key, his branch of sin, which then he says that he will without fail stop Shiro. When they get to the mother goose system, Ganta uses his branch of sin to overwrite the security system. When they try to strengthen the mother goose system, Hagire appears with Yosuga, barely alive and patched up. The deadman try to stop him, but he easily overpowers them, with Yosuga`s help who shields him from other attacks with her branch of sin, and tries to release Shiro`s true power. As Ganta tries to stop him, Hagire reveals to him that he was the one who decapitated Azami and asks him if he would like to die the same way. He then whispers to Ganta a secret about Shiro.
Hagire tries to kill Ganta, but is saved by other Deadman. They counter attack with both sides taking heavy damage. Yosuga begs Hagire to stop and to return her Toto, which Hagire ends up killing Yosuga by piercing her head and asks why does everybody get in his way. At the end, the deadman overpower Hagire. Hagire, at brink of death, says that he doesn`t want to die cause he still hasn`t figured out what love is, saying its irational. Ganta approaches Hagire, telling him after hearing his words, he knows what to do with Shiro now and that he wont run away from his sins. He then uses his Ganbare Gun to kill Hagire. As Hagire passes away, he realizes that Yosuga was his reason for living, though its unknown if this was said by Hagire or Toto.
After the battle, they try to strengthen the mother goose system, but Wretched Egg appears and destroys it, unleashing her full power and destroying half of island. As the island collapses, Edo Kaido and the rest arrive to save Ganta and the others, saying that they need to get away from that monster, where Ganta rejects saying that Shiro`s not a monster and that he needs to save her. Crow supports him and gives him his coin to flip for luck, where Ganta realizes that its head on both sides.
As Ganta goes to stop the Wretched Egg he remembers what Hagire whispered to him, that Shiro was Ganta`s substitute labrat. He also remembers Hagire, telling him that he can see it for himself, since he has his memories. He then recalls Hagire`s memories and sees that his mother offered herself, to get pregnant and use her own baby as a test subject, since none of the parents would agree to give their own child for an experiment. After 9 months, Sorae had a baby boy, Ganta. She then changed her mind about letting him be experimented on, and adopts an albino baby girl, Shiro, where Hagire accepts her offer. After Ganta is done thinking, he approaches the ferris wheel, he enters in one of the capsules and confronts Shiro, saying that they should enjoy their free time.
Enhanced Endurance: It has been noted by Shiro that no matter how much damage he has taken Ganta always gets back up. The first example of his high endurance is when he was a child and Shiro accidentally hurt him when they were playing. Even though he was covered in bruises and scratches, he only cried for a minute before getting back on his feet and shouting "Aceman Revived" surprising both Shiro and his mother. His endurance is so great that he can take numerous punches and Owl's Eyeball attacks from Nagi Kengamine and still stay standing.
Branch of Sin: As a Deadman, Ganta possesses a Branch of Sin. This allows him to freely control his blood. He usually bites his thumb to forcedly bring his blood out. His ability came from the Red Man who forced a Red Diamond into his chest after all of his friends were murdered.
Branch of Sin: Ganta Gun(丸太・ガン, Ganta Gan): Ganta collectes his blood in his right hand and shoots it away (simillar to a bullet, hence the name Gun). He first uses this ability at the first day he was in DW. A boulder was thrown down with the intent to kill him and Ganta fires his Ganta Gun and shatters the boulder. He has trained his Ganta Gun to be faster and stronger with the help of Crow. The bullet can also ricochet against other objects, thus changing its course.
Supersonic Ganta Gun: During his training with Senji, Ganta developed a new kind of Ganta Gun. He uses his blood to make a bullet that is smaller and slimmer than his usual one. This way the bullet travels at a much faster speed and can be fired multiple times one after the other. This also reduces the chances of anemia, because Ganta uses less blood this way. While the regular Ganta Gun is more like a cannon, the Supersonic Ganta Gun fires like a machine gun.
Branch of Sin: Ganbare Gun(頑張る・ガン, Ganbare Gan, lit. "Do your best" Gun): During his fight with Azuma Genkaku, Ganta discovers an improved version of his Ganta Gun. This version has a faster and much more powerful bullet that causes patterned, black lines (shiny red-pink in the anime) to cover his body. However, in the anime only, Shiro is shown to have identical lines on the right-side of her face at the same time as Ganta's appear, this suggests that the Ganbare Gun is linked to Shiro and further suggesting that this Branch of Sin is the key Branch to open the Mother Goose System. This Branch of Sin is the only one that has not yet been copied by Toto.
Resolve: Similar to his endurance, Ganta has developed a strong integrity and perseverance to achieve his goals. This started out as simply survivng to kill the Red man to gain vengaence for his friends, but has progressed to protecting his friends, especially Shiro. This resolve couple with his endurance allows him to survive and win against superior opponents and to keep his goals in sight.
Ganta's name can also be read as Maruta, which means "round, cut log". This expresses itself in Ganta's mark, that has the form of a round, cut log with a leaf on it. Apparently, he marks a lot of his stuff with this mark, but it has only been seen on his cellphone in the first chapter and episode, as well as on Shiro when they were children, and the piano his mother used to play the Woodpecker Song.
In real world, Maruta, were codenames for human experiments, which were conducted by theJapanese Army's Unit 731, during WWII, Which is the true meaning behind Ganta`s name, since he was meant to be used as an experiment at first.
Ganta's birthday is July 9th, as mentioned in Sorae's dairy.
Ganta's Branch of Sin is slowly killing him as revealed in chapter 51 and has caused parts of his skin to become a darker color.
The status of Ganta's father is unknown. Since Ganta went to an orphanage after being in prison, it is assumed that he is either dead or missing. However, there was a male colleague who, alongside Hagire, consistently accompanied Sorae throughout her career as a scientist and was seen with her throughout her pregnancy. When he states that he planned on resigning from the institution due to the inhuman experimentations, he asks Sorae "Is there something I should be taking with me?", in reference to the infant Ganta. It can inferred from this exchange that the scientist may have been Ganta's biological father.
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