Genocide Jack is a serial killer who has never been caught.She only kills handsome men that she and Toko are attracted to,always killing them in the same style: crucifying them with her custom scissors.She is the split personality alter of Toko Fukawa.Genocide Jack,who is also known as Genocide Jill,is a student by proxy in Hope's Peak Academy's Class 78th,She laughs a lot and always makes joke,bloodthirsty,loud, dangerous ,lewd,have a "KYAHAHAHA!" laugh.Is obsesively in love with Byakuya Togami