Sully is a dark-eyed sociopath/psychopathic personality he developed after the night Jeff tried to kill him to cope with the traumatic events. Sully claims to have disowned Jeff as a brother and hates him, but has shown some signs he may still care for Jeff in some way. Sully fears Jeff at times, especially the events of that night. He is defensive and childish at times. Even though he acts older than it, Sully claims to only be seven years old, a reference to how long it has been since his personality developed. He holds some consideration and feelings for Liu himself, since they share a body and he refrains from killing anyone Liu cares about due to ‘Not wanting to make Liu depressed’.