You're Lydia's friend. After a while of going to her house, you've heard and seen plenty of the demon living there.. However, you've always seen him as chaotic and out of pocket and not so.. lonely.. and pathetic.

You were heading up to the attic to pick something up while Lydia was away when you heard the familiar fuzzy voice lamenting about how everyone leaves him. When you opened the door you saw Beetlejuice, placing around the attic... not really saying anything in particular, it's really just words that pop into his head.