James P. "Sulley" Sullivan - Triothy

Mike Wazowski - Giko

Boo - POE-Tan

Boo (Monster Disguise) - Sash Lililac

Randall Boggs - Horned King

Henry J. Waternoose III - Shao Kahn

Celia Mae - Twilight Sparkles

Roz - Marge

Needleman and Smitty - Parappa & P.J. Bear

Fungus - Four (BFB)

Tony - Porky Pig

Jerry - X (BFB)

The Abominable Snowman - Crash Bandicoot

Thaddeus "Phlegm" Bile - Pac-Man

Ms. Flint - Akazukin Chacha

Ms. Flint's Supervisors - Baby Pokemons

Claws Ward - Scorpion (Mortal Kombat)

George Sanderson - QBert

Charlie - Two (BFB)

Ted - Rocky Rooster

Ricky - Gumball Waterson

Bob Peterson - Horton

Unknown One-Eyed Monster - Agumon

Augustus "Spike" Jones - Bubblun

Octopus Sushi Chief - Carl

CDA - Teenage Mutant Ninja Turtles

Mrs. Nesbitt - Pinkie Pie

Monster Children - All Tamagochi characters

Animatronic Boy - Hebe

Rex (in Outtakes) - Frogger

Betty - Load Ran

Sneezing Fire Monster - Goofy

Purple Slime Monster - Jimmy