Bill Cipher

Bill is a cunning, blasphemous, eccentric, psychopathic, and physically irreverent demon who finds most things amusing, especially if they cause suffering or harm to others. He is outrageous and strange, as well as a quick talker and thinker. Although it may seem simply annoying, it should not be underestimated; for when he is angry, he is a force to be reckoned with, as he will unleash his near-omnipotent powers upon those unfortunate enough to make him angry. When accused of being crazy, Bill agreed with the statement. He is also shown to be somewhat uncomfortable, as seen when he makes his presence known to Dipper when the latter is trying to figure out a password within a limited period of time. particularly, your voice drops to a lower pitch (usually when emphasizing a statement).

Bill is not someone who believes in rules. Instead, he follows his own selfish philosophy, which means doing whatever he wants without caring about the consequences. He thinks of laws and physics as meaningless and demonstrates an irresistible desire to break these rules, causing absolute chaos in any way he can. The lives he ruins have no merit to him and he enjoys tormenting and turning people's worlds upside down. He also sees reality as an "illusion" and values ​​its destruction.

Upon possessing Dipper's body, Bill appears quite masochistic, hurting himself in various ways from the emotion of it, exclaiming that "the pain is hilarious". He appears to have little knowledge about the human body, specifically its physical limits. This comes back to him when he fought Mabel for Diary 3, when he finally fell, exhausted.

As shown in "Weirdmageddon Part 1", he also reacts sadly whenever a would-be subject exceeds his limits, such as when he scrambles "the function of every hole in Preston Northwest's face" and in "Weirdmageddon 3: Take Back The Falls" when he decided to kill one of the Pines twins "just for fun".