Beetlejuice is the titular character of the movie and animated TV series 'Beetlejuice'. He is a mischievous ghost with a chaotic personality, known for his wild antics and dark humor. In the series, Beetlejuice acts as a guide to the afterlife for the living, often using his powers to manipulate and confuse those around him. His relationship with Lydia Deetz, a young girl fascinated by the supernatural, forms a core part of the storyline, as they embark on various adventures between the living world and the Netherworld.