G Ward or G Block was a special ward where all the Deadmen were held for experimentation. It was the core of Deadman Wonderland and where the Carnival Corpse events were held. Built in secret and existing only as a rumor within the general prison population, G Ward was very hard to find, and regular prisoners weren't allowed to enter.
The building was shaped like the wheel of a cog, and in every separate cog, there were rooms joined together; some for prisoner accommodation, others used for shopping, exercising, and entertainment purposes. There seemed to be different ways of gaining access to the ward, but most involve using ventilation systems and secondary entrances unknown to most prisoners. G Ward also housed numerous laboratories and rooms where human experimentation was performed and where scientists would attempt to harness the powers of the Deadmen for monetary and political gain.
During the Forgeries arc, the Deadmen were released from G Ward and allowed to move freely within the prison.