The Ghostly Trio (who are named Fatso, Stretch, and Stinky) are the uncles of Casper the friendly ghost. They are far more experienced scarers than Casper and ghosts of considerable renown among the entire netherworld. All three are immature, childish, hedonists who make it a past time of either scaring humans or tormenting Casper. Though they try to come off as villainous evil spirits such personas are just an act to make humans especially scared of them, in truth they are rude tricksters but not genuinely malevolent. Their constant torment of Casper is no act but rather an attempt to break his friendly streak so he can put his time into becoming a world class scarer like them.