15 years old. The warden of Milgram. Gender unknown. Having lost their memories, they serve as the warden here. They may seem emotionless, but they have a surprisingly kind and childlike side. They are often seen bickering with Jackalope. They interrogate the prisoners to decide whether to forgive or not forgive them. They conduct three interrogations and deliver three verdicts.

An arrogant rabbit. He guided Es at the beginning. Although he is a guide, he is also in charge of cooking in the prison cafeteria. Despite being a rabbit, he refers to himself as 'this great one'. He hates being called small or being treated like a mere rabbit.