Bill is a cunning, blasphemous, eccentric, sadistic, psychopathic, and physically irreverent demon who finds most things amusing, particularly if they cause distress or harm to others. He is outrageous and outlandish, as well as a quick talker and thinker
He hates the pines family who erased his exsistnece in Stanleys mind he's a meglomaniac
He can enter peoples minds through the mindscape where her can watch your memories destory your mind etc
 He's in his human form not his triangle form