Beetlejuice

Beetlejuice is the titular main antagonist of the 1988 horror comedy film Beetlejuice, and the anti-heroic protagonist of the spinoff animated television series of the same name.

Abilities

 * Shapeshifting
 * Essokinesis
 * Possession
 * Expertise in trickery

Past
Beetlejuice is a freelance poltergeist who specializes in the art of "Bio-exorcism", the act of scaring living occupants out of their own house. During the film, Beetlejuice lives in exile inside of a small miniature remake of the town of Winter River, buried in the model town's graveyard. Beetlejuice can only be resurfaced by manually traveling to the town and being re-dug from his grave, and if his employers hire him can then on be instantly summoned by reciting his name three times in a row. Beetlejuice's date of birth and death are unknown but it is known by context that he died a long time ago, and has been enjoying his afterlife for what has most likely been centuries.

Beetlejuice
In the film, Beetlejuice was and more openly malicious than he would become in the cartoons, arguably being one of the main antagonists, though he also acted as a benefactor of sorts to the heroes; though there was no attempt to hide the fact that Beetlejuice was not meant to be a nice character, even the heroes who summoned him knew that he was, pretty much, a demon. But Beetlejuice was still used as a force of (relative) good, as his chaos was directed largely at a group of human antagonists, though he was still rude, obnoxious, and hostile towards the heroes as well, not to mention the fact that he also tried to force one of the main characters to be his unwilling bride, much to her disgust.

Beetlejuice: The Animated Series
In the animated series, Beetlejuice was depicted as being more as heroic protagonist (though he would still be a bit dishonest sometimes). He is often referred to as "BJ" for short. A recurring gag has him using figures of speech and idioms and then changing himself and/or his surroundings to match the pun (e.g., if he says something bugs him, he will turn into an insect).

Beetlejuice: The Musical
In Beetlejuice: The Musical, he remains basically the same as his in movie counterpart, with the exception of that it is implied he is actually Juno's son, and might have turned into a demon.