The summary of dude's video explains, "He's not wearing any pants. It just seemed right." Dude. Epic move, brah.

Anyway, I didn't know what that thing was either, so I did some leg work. His name's "Slider." Favorite Movie: Muppets Take Manhattan." Favorite Beverage: Strawberry Shake. The more you know.

Oh, I couldn't find anything about the purple creature, though. Sorry.

Cleveland Indians fan molests their mascot [Buzzfeed]