Kotetsu Nikaidou

Kotetsu is a confident and somewhat arrogant guard, he often sits on cellular networks and, apparently, posts stories and photos to one of the cellular networks, and maybe several social medias

Kotetsu is the son of Taiga Nikaidou, he's the deputy supervisor of the building 2. Like his father, Kotetsu is implied to have been a famous and successful wrestler, but he became the deputy supervisor of building 2 after Taiga fired Mao Nimaijita. Kotetsu is proud and believes that all prisoners are bad and that you can't communicate with them in a kind way. All of this is manifested by the fact that when Kotetsu's father approached him, he was just sitting on the couch in the office, looking at his phone and posting photos from the new place of robots. later, Kotetsu appeared during the New Year's banquet in the room where the guards were celebrating, he suspected that the guards from building 8 were plotting something, given that they were friends with one of their prisoners, and began to threaten them, but the the deputy supervisor of the 8th building Tanaka Midzuchi reacted to the threat, to what Kotetsu reacted by simply waving it off, seeming like it didn't scare him.