Various / Announcer / Timmy Ticker / Billy Quan / Al Gea / Bob of This Old Climate / Jackie Smazz / Narrator / Sammy Cosell / Self / Therm of Therm's Sphere of Atmospheres
Mr. Mirror / Alien / Astronaut Man / Blimp / Cyclops / Microphone Man / Mr. Balloon / Mr. Banana Peel / Mr. Bear / Mr. Cactus / Mr. Campfire / Mr. Caterpillar / Mr. Cockroach / Mr. Diamond / Mr. Dinosaur Bone / Mr. Dodo / Mr. Flea / Mr. Fly / Mr. Garbage Truck / Mr. Grasshopper / Mr. Heart / Mr. House / Mr. Hovercraft / Mr. Ice / Mr. Jupiter / Mr. Lightbulb / Mr. Lungs / Mr. Magnet / Mr. Mailbox / Mr. Mountain Top / Mr. Optical Illusion / Mr. Paint / Mr. Pizza / Mr. Pot / Mr. Potion / Mr. Pumpkin / Mr. Race Car / Mr. Rock / Mr. Sandwich / Mr. Sea Turtle / Mr. Seesaw / Mr. Ship / Mr. Shooting Star / Mr. Solar Panel / Mr. Submarine / Mr. Toaster Oven / Mr. Tomato / Mr. Tornado / Mr. Tree / Mr. Turkey / Mr. Turtle / Pterodactyl / Pulley Man / Radio Man / Stork / Thermal Man / Tyrannosaurus Rex / Wedge Man