He has a loud rockstar-like personality and usually hosts the events at the prison, such as the New Year's Tournament. He met Jyugo when the other inmate saved him from starving to death in the first prison he was sent to. He is calm and trusting most of the time, although he is known to become loud and obnoxious when annoyed. The five proceed to carry out a plan to capture all of the inmates and supervisors, although it's unknown exactly what Enki's unltimate goal is. When he was younger, he was usually seen training. In season 2, it's revealed that he is actually a mole working for his former supervisor, Enki Gokuu, when he frees Enki and the prisoners allied with him from their underground cells. During the second season, he is released by Inori and Houzuki Sanzou,and the three join forces with Ruka Gojou; another former guard who was arrested, and an incarcerated mob boss named Hachiman, who have all allied themselves with Enki. He has a great intuition and is able to make bets on what outcome will occur using his observational skills, luck and intuition. According to Liang and Upa, Enki used to be in charge of a prison in China where he cruelly beat up inmates to become stronger. He is kind and outgoing to the point of being silly but can be blunt. He is likened to a dog. She is particularly watchful of inmate , son of the man known as the eternal fugitive. He becomes irritated when compared to his older brother and when Hajime is mentioned as he sees Hajime, who was able to capture Enki while Samon himself hesitated, as a painful reminder of how strong he feels he needs to be. Enki had built an underground prison beneath Building 5, and has a secret archive room which has data on certain dangerous criminals, later discovered by Jyugo, that Enki was aware that Jyugo was part of a human experiment. The mysterious person managed to injure Enki's left arm and Enki called him a monster. He wears a lot of make up and has a somewhat effeminate personality. He is likened to a pheasant. He was strong enough to break a boulder in two with a single strike, mediate underwater and even studied diligently. He has multiple piercings on his left ear and wears a golden choker. In the second season, it's revealed why he is so ill and dependent on medication. He is said to be the strongest of all supervisors in the prison. He is often the one who keeps the others in line when Hajime isn't around, and Nico jokes that he's starting to act like he's their mother. After Jyugo is beaten within an inch of his life by Hajime, he holds a deep anger against Hajime, stating he could never come to like prison guards. Nico ニコ, Niko Voiced by: Daiki Kobayashi  Japanese ; Justin Briner English  Inmate An American effeminate short male with green hair and bandages on the right side of his body, predominantly on the right side of his face. He escaped other prisons because the food was terrible, but likes the cooking at Nanba. Often covers for building 13 when the prisoners escape. Kiji Mitsuba 三葉 キジ, Mitsuba Kiji Building 3 Supervising Officer. Nanba Prison guards[ edit ] Voiced by: Tomokazu Seki  Japanese ; Ian Sinclair English  The supervisor of Nanba prison Building A Japanese bald strong serious man who takes his job very seriously and has a cross shaped scar on the left side of his face. He's very strong and often trains with Tsukumo. He sometimes serves as the narrator for the episodes, often saying things like, "Remember this is still a comedy anime! Some time ago, Enki faced someone with blades similar to Jyugo. He is a huge anime fan. He is very suspicious of Jyugo, not just because of his father. It is suggested that he tried to bring attention to the crimes against prisoners to his superiors while working as a police officer. He is willing to do anything his job dictates, even kill if need be. Momoko Hyakushiki 百式 百子, Hyakushiki Momoko Voiced by: Satomi Akesaka  Japanese ; Marissa Lenti English  The prison warden. He also was often seen with Samon by his side. She is an intimidating serious woman with long blue hair and has a crush on Hajime. His preferred weapon is his whip. He can be short tempered and impulsive, but cares for his friends, and mostly remains peaceful and happy. Upa was nearly killed by his abuse and Liang was terrified at the thought that he would be next but Enki was transferred to Nanba Prison. He now resides in the underground prison of Building 5. He's also very loyal to Jyugo, whom he claims saved his life and gave him his freedom back. After spending years locked in the prison infirmary, he eventually sunk into a deep depression and wished that he could die, until Jyugo freed him and helped him develop an interest in life again. He has a horrible sense of direction and loves working out. Yamato Godai 五代 大和, Godai Yamato Voiced by: Shunsuke Takeuchi  Japanese ; Marcus Stimac English  The deputy supervisor of building 13 at Nanba prison. In season 2, it's revealed that he has an older brother, Enki, who was the former supervisor of building 5; Enki was very popular among both the other guards and the prisoners, however, he secretly tortured and abused the inmates in his care, eventually murdering one of them and going on a rampage when his colleagues tried to arrest him. He is a bit of a worrywart and an easy target for the cell 13 inmates to bully but is otherwise a pleasant person who takes his job seriously. He is described as a pretty boy. Mitsuru Hitokoe 一声 三鶴, Hitokoe Mitsuru Voiced by: Kenjiro Tsuda  Japanese ; Ricco Fajardo English  One of the Guards. The sole exceptions are the shackles on his neck, wrists and ankles which were placed on him mysteriously when he was asleep by a guard with a scar on the back of his neck. He knows about the warden's crush on Hajime and is often beat up by her for daring to tease her about it. He is a hardworker, and before coming to Nanba prison was a police officer. He is usually seen with a serious expression. Drugs have an unusual effect on him and rather than incapacitate him, they have alternate side effects. He is annoyed by the antics of the cell 13 inmates and often intercepts them before they escape the prison. He likes shogi and has a black belt in judo. His face is boar-like, having teeth that mimic such. After being arrested, the doctors at the first prison he was sent to performed painful, invasive medical experiments on him under the guise of trying to help him get better, which only made him more ill. He says that he's working with Enki because he wants to see Samon dead, due to how the other guard was chosen as the new building 5 supervisor over him; he considers Samon to be weak and cowardly in comparison to his older brother, and detests having to take orders from him. His name just means 'fifteen'. Since then, Enki was searching for him with the intent to kill him, as he believes the man is too dangerous to let live. After betraying his co-workers and killing an inmate, later revealed to be Elf, he was apprehended and arrested by his co-workers. He has long blue hair. He insists he is not homosexual despite his personality and appearance. Aguebor English  The deputy supervisor under Samon Gokuu. While trying to capture the inmates, he sees Jyugo and plans to kill him, as he believes that he is the man with the blades who attacked him. Formerly the supervising officer of Building 5, he was well-respected and admired by the many fellow guards and even inmates throughout Nanba Prison. Inori Hakkai 八戒猪里, Hakkai Inori Voiced by: Mitsutaka Itakura Japanese ,  Randy E. He is confident, cheerful, impulsive and gets bored easily. He states that he has to be in Nanba as he has been to all other prisons. He hates the guard who placed the shackles on him, and longs to find him and have them removed. He appears to be a tall well built Japanese man and is rather friendly and silly, often laughing. He longs to exceed him in order to prove himself to Hyakushiki. His father was inmate number at the Nanba prison and known as the shame of the Nanba prison. Samon still struggles to comprehend how his brother could do the things he did, and is often taunted by the other guards, who accuse him of being a traitor like his brother was. However, according to Liang and Upa, Enki had continued to cruelly beat up inmates in Nanba Prison which causes inmates to fear Enki. He loves fighting and eating and is incredibly strong, with only some of the supervisors being stronger.
He is of Japanese descent, has black hair with red streaks at the end, and has heterochromia ; his left eye is green and his right eye is violet. He is calm at Nanba as the medicine is taken orally and is flavored.
In episode 21, it's revealed that he has a violent split personality that will emerge if his health problems are not kept under control with his medications, but he is unaware of its existence.
Rock ロック, Rokku Voiced by: Airu Shiozaki  Japanese ; 7 clans casino red rock Greene English  Inmate number He is American, has a mohawk, wears long feather earrings, and is the physically largest of his fellow cell mates. He has orange hair with green tips, and a red belt used for a tail like appearance.
He is more or less the opposite 7 clans casino red rock Hajime; slow, clumsy and non-athletic.
He rarely takes anything seriously and is rather childish and happy go lucky. Despite this, it's eventually revealed that he actually cares for the prisoners in his building quite a great deal, as he helped Upa reconnect with his family after he was arrested in China, and later took Liang under his wing when the inmate was first transferred to Nanba. He was also considered indispensable to Building 5 and Nanba Prison. As a child, a drug gang used him to test their products, which made him develop several unknown illnesses. He grew up in the slums, where he was a drug mule, and has escaped multiple prisons primarily because they tried to inject his medicine into him. He is skilled at picking any kind of mechanical or electronic lock. He has a chain ball shackled to his right leg. He has a kind and sweet personality and is very girly. He has a crush on Hyakushiki and is well aware that she has a crush on Hajime. Uno ウノ Voiced by: Tetsuya Kakihara  Japanese ; Alejandro Saab English  Inmate number He is of British descent, has a long braid, wears a hat, loves women and gambling, and often has a pair of cards on hand. He broke out of his previous prisons because he had dates to attend.