Yakumo Oomori

Yakumo Oomori one of villains of Tokyo Ghoul is ghoul and executive of Aogiri Tree. who torurted fellow ghouls include Ken Kaneki. he was nicknamed as Jason because he was wear hockey mask and brutally

Past
Yakumo lost his mother as child and living 13th ward every since. he was caught and toured by sadistic investigator from Commission of Counter Ghoul at Ghoul Detention Center left him to become sadstic man and escape from the prison

Finding Rize
He and Nico was ordered by Aogiri Tree to find Rize Kamishiro for her crimes and found out her orgions was donted to Ken Kaneki and kidnapped him. Yakumoo kills ghouls who opposed and wants to escaped before discovery. Yamuko chosed Kei as next toy and toruted him for ten days by injected him or crusesd his fingers before his hair turns white.

Yakuo dragged Kei to see mother and son as Kei begged Yakuo to spaned them but Yakumo refused and killed them in front of Kei which trigged him as ghoul side to take revenge against Yakumo. during Aogiri hideout, Yakumo tired eat Kei before Kei eaten Yakumo's kagune leaving Yakumo helplilsy at hobby room before he was found and killed by Juuzou Suzuya