Shiobake Kototsuro is known as the Ultimate F.B.I. Agent. He was an agent for the police department and was the top best. Unfortunately, they didn't realize that he was also an insane individual and a criminal/murderer. He murdered anyone who broke a public rule be it purpose or accident, and sometimes would sexual intercourse with the corpse if the victim is female. Deranged, sociopathic, and highly dangerous, these traits were attributed onto him as a kid because of his broken family, with the center being his drunken father and a mom for a karen. His parents were soon arrested, but the scarred trauma inflicted on him manifested into insanity. He blackmailed Chi (Kai) into his murder plan by forcing him to create an elaborate plan for murder, the target being Aegiea Quincy, the Ultimate Servant. Despite the plan being an accomplishment, it suddenly began to backfire on him because Chi (Kai) informed the murder to Quincy and made a plan to expose him for who he truly is. He was then revealed to be the culprit by Chi (Kai) and Shiobake's mind suddenly snapped. He was of course detained was about to be executed by Monokuma, but Cat prevented that and instead give him mental help, with an idea to keep him detained as well. Shiobake was given a cell on the third floor of the Ultimate Academy for Gifted Juveniles and his arms chained together. Despite his insane and erotic behavior, he was beginning to calm down as months passed.
Ultimate: F.B.I. Agent