Beetlejuice (or Betelgeuse) is the titular character from the 1988 film 'Beetlejuice' and its subsequent animated series. This mischievous ghost is known for his eccentric behavior, dark humor, and unique supernatural abilities. In the series, Beetlejuice befriends a mortal girl named Lydia Deetz and often takes her on wild adventures in the Neitherworld, a bizarre and spooky realm. As a ghost, Beetlejuice is both a trickster and a guide, providing comic relief while also aiding Lydia in her quests. His character explores themes of friendship, the afterlife, and the supernatural.