Genocide Jack's appearance is nearly identical to Toko's since they share the same body. However, some features differ: her irises expand and become red, and she gains (or possibly displays) an abnormally large tongue over a mouthful of sharp teeth. Despite being a bloodthirsty and potentially very dangerous serial killer, Genocide Jack is mostly portrayed as comic relief in the Danganronpa series. She laughs a lot and sometimes pretends to be serious only to reveal that she is just joking.