Kitty Litter! (Mr. Conductor, Ruff Ruffman and The Aquabats! Super Show!)

Kitty Litter! was the twenty-first episode of the crossover.

The Conductors of Shining Time Station US

 * 1) Mr. Conductor 1 (Ringo Starr)
 * 2) Mr. Conductor 2 (Alec Baldwin)
 * 3) Mr. Conductor 3 (Michael Brandon)

The FETCH! Host

 * 1) Ruff Ruffman (Jim Conroy)

From The Aquabats! Super Show!

 * 1) The MC Bat Commander (Christian Jacobs)
 * 2)  Crash McLarson (Chad Larson)
 * 3)  Jimmy the Robot (James R. Briggs, Jr.)
 * 4)  Ricky Fitness (Richard Falomir)
 * 5)  Eagle Bones Falcon Hawk (Ian Fowles)

Kids' WB! and FOX Kids in the style of Olympic Games

 * 1) Ash Ketchum and Pikachu (Sarah Natochenny and Ikue Ohtani)
 * 2) Mary and Togepi (Kerry Williams and Satomi Korogi)
 * 3) Rikochet and El Rey (Carlos Alazraqui and Michael Donovan)
 * 4) Al Smith (Tom Kenny)
 * 5) Nelly Marcos and Baby Mayra (Lisa Ortiz and Kayzie Rogers)
 * 6) Sakura Avalon and Kero (Carly McKillip and Richard Newman)
 * 7) Jonny Quest and Bandit (Jason Marsden and Frank Welker)
 * 8) Shaggy Rogers and Scooby-Doo (Matthew Lillard and Frank Welker)
 * 9) Sandra Larson (Lisa Ortiz)
 * 10) Virgil Hawkins (Phil LaMarr)
 * 11) Daemona (Jocelyn Loewen)
 * 12) Kevin Whitney and Krypto (Alberto Ghisi and Samuel Vincent)
 * 13) Gordon Hooper (Eric Stuart)
 * 14) Felicia and Tawny McCoy (Lisa Ortiz and Tara Jayne)
 * 15) Donkey and Diddy Kong (Richard Yearwood and Andrew Sabiston)
 * 16) Chance Furlong and Jake Clawson (Charlie Adler and Tom Kenny)
 * 17) Kimiko Tohomiko (Jennifer Hale)
 * 18) Osmosis Jones and Drixenol Koldriliff (Phil LaMarr and Jeff Bennett)
 * 19) Johnny Test and Dukey (James Arnold Taylor and Louis Chirillo)
 * 20) Tyler Bowman (Matt Hill)
 * 21) Tai Kamiya and Agumon (Joshua Seth and Tom Fahn)
 * 22) Kari Kamiya and Gatomon (Lara Jill Miller and Mary Elizabeth McGlynn)
 * 23) Flint and Rocky Hammerhead (R. Martin Klein and Michael Sorich)
 * 24) Fox McCloud (Joshua Seth)
 * 25) Marina Liteyears (Wendee Lee)
 * 26) Serena Tsukino and Luna (Stephanie Sheh and Michelle Ruff)
 * 27) Kick the Cyber Cat (Rick Jones)
 * 28) Mushra (Tom Gibis)
 * 29) Lorelei Brooks (Cherami Leigh)
 * 30) Mondo Ooya (Derek Stephen Prince)
 * 31) Danielle Sanders (Tifanie Christun)
 * 32) Speedy Cerviche (Rick Jones)
 * 33) Guido Anchovy (Terrence Schammel)
 * 34) Kassie Carlin (Julie Maddalena)
 * 35) Kelly Westwood (Tifanie Christun)
 * 36) Alicia Parker (Julie Maddalena)
 * 37) Millie Andrew (Tifanie Christun)
 * 38) Leonardo (Michael Sinterniklaas)
 * 39) Sonic the Hedgehog and Christopher Thorndyke (Jason Griffith and Suzanne Goldish)
 * 40) Yoh Asakura (Sebastian Arcelus)
 * 41) Yami Yugi Moto (Dan Green)
 * 42) Miki Atwood (Lisa Ortiz)
 * 43) Jaden Yuki (Matthew Charles)
 * 44) Zoey Hanson (Amanda Brown)
 * 45) Emily Anderson (Laura Bailey)
 * 46) Maya Aida (Debi Derryberry)
 * 47) Mikey Kudo and Shoutmon (Nicholas Royce and Benjamin Diskin)
 * 48) Van Yamano (Cole Hanson)

Mean Girls

 * 1) Meilin Rae (Nicole Oliver)
 * 2) Chigusa Burgh (Lisa Ortiz)
 * 3) Mayuko Kiyokawa (Rachael Lillis)
 * 4) Terri Burton (Roxanne Beck)
 * 5) Heather Hogwarsh (Laura Summer)
 * 6) Abigail Thompson (Laura Summer)
 * 7) Jordan Hanson (Colleen O'Shaughnessey)
 * 8) Anne Granger (Carrie Keranen)
 * 9) Yolanda Harrison (Susan Laney Dalton)
 * 10) Marina Barton (Maggie Blue O'Hara)
 * 11) Kenny Marigold (Roxanne Beck)
 * 12) Nora Richards (Megan Hollingshead)
 * 13) Christine Flowers (Laura Summer)
 * 14) Monica MacDonald (Tara Jayne)
 * 15) Batch and Gluko (Wendee Lee and Dina Sherman)
 * 16) The Becky Trio (Lisa Ortiz, Tara Jayne and Veronica Taylor)
 * 17) Vivian Goodwin (Anna Garduno)
 * 18) Jasmine Niihao (Megan Hollingshead)
 * 19) Tapioca Niihao (Veronica Taylor)
 * 20) Litchee Niihao (Kerry Williams)

Pokemon Villains

 * 1) Jessie, James, Meowth and Wobbuffet (Michele Knotz, Jimmy Zoppi and Erica Schroeder)
 * 2) Giovanni (Craig Blair)
 * 3) Cassidy and Butch (Emlyn Morinelli and Jimmy Zoppi)
 * 4) Dr. Namba (Jimmy Zoppi)
 * 5) Damian (Eli Jay)
 * 6) Alexander Davis (Kayzie Rogers)
 * 7) Koji (Ted Lewis)
 * 8) Ken and Mary (Marc Thompson and Caroline Hellman)

Thomas Stories

 * 1) Oliver The Snow Engine
 * 2) Not So Hasty Cakes