Finn is a 15-year-old human. He is roughly five feet tall and is missing several teeth due to his habit of biting trees and rocks among other things.
Jake can morph into all sorts of fantastic shapes with his powers, but typically takes the form of an average sized yellow-orange bulldog.
Princess Bubblegum loves (most of) her subjects and defends them tirelessly when trouble brews and is perhaps the most intelligent person in the Land of Ooo.
Ice King, formerly Simon Petrikov, is a blue-skinned, elderly man with unusually pointy fingers, pointy toes, sharp teeth, and a long, goblin-like nose.
Lumpy Space Princess (LSP) acts like a bratty, apathetic, sassy, attention-seeking and willfully ignorant teenager, often texting on her phone.
Marceline is over a thousand years old. Centuries of wandering the Land of Ooo have made her a fearless daredevil and a a lover of all things exotic.
The episode begins with candy children that have bodies resembling different shapes sliding down a slide, shouting with excitement. The kids are viewed from an horizontal angle in the next scene as they go through a playground-like structure. Finn and Jake are examining the ‘Catapilla Family’. After watching Princess Bubblegum teach the children about the Food Chain, they head to the snack bar as Finn found Princess Bubblegum’s class useless.