Mr. Conductor and Ruff Ruffman Meet The SciGirls

Loosely based on the Twin Cities original, here is a crossover with the Conductors and Ruff Ruffman.

Plot

 * Izzie and Jake join everyone for a 39 episode adventure.

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 SciGirls

 * 1) Izzie (Lara Jill Miller)
 * 2) Jake (Greg Cipes)

From Pokemon Mix

 * 1) Ash Ketchum and Pikachu (Sarah Natochenny and Ikue Ohtani)
 * 2) Mary and Togepi (Kerry Williams and Satomi Korogi)
 * 3) Brock and Croagunk (Bill Rogers)
 * 4) Lillie and Snowy the Vulpix (Laurie Hynes and Emily Jenness)
 * 5) Mallow and Tsareena (Jessica Pacquet and Alyson Leigh Rosenfeld)
 * 6) Lana, Primarina and Sandy the Eevee (Rosie Reyes, Laurie Hynes and Erica Schroeder)

From Mucha Lucha! (with Xiaolin Showdown/Chronicles)

 * 1) Rikochet and El Rey (Carlos Alazraqui and Michael Donovan)
 * 2) The Flea (Candi Milo)
 * 3) Buena Girl (Kimberly Brooks)
 * 4) Omi (Tara Strong)
 * 5) Ping Pong (Tara Strong)
 * 6) Kimiko Tohomiko (Jennifer Hale)
 * 7) Raimundo Pedrosa (Eric Bauza)
 * 8) Clay Bailey (David Kaye)
 * 9) Dojo Kanojo Cho (Michael Donovan)
 * 10) Master Fung (Michael Donovan)

From Hoop-a-Joop

 * 1) Al Smith (Tom Kenny)
 * 2) Amy Sommerstein (Dionne Quan)
 * 3) James Carmichael (Rob Paulsen)
 * 4) Melanie Szyslak (Nika Futterman)

From Kodocha (with Aqua Age)

 * 1) Sandra Larson (Lisa Ortiz)
 * 2) Floella Thompson (Roxanne Beck)
 * 3) Felicia McCoy (Lisa Ortiz)
 * 4) Tawny McCoy (Tara Jayne)
 * 5) Aya MacDonald (Amy Birnbaum)
 * 6) Hilary Brood (Rachael Lillis)
 * 7) Katherine Jordan (Megan Hollingshead)
 * 8) Christine Richards and Serena Hamilton (Kerry Williams and Tara Jayne)
 * 9) Maya Burlington and Alexandra Hartman (Leah Applebaum and Mandy Bonhomme)
 * 10) Terri Burton (Roxanne Beck)
 * 11) Roberta Parsley, Mary Taylor, Ramona Hill, Marley Hanson and Nellie Carlin (Leah Applebaum, Megan Hollingshead, Kerry Williams, Rachael Lillis and Amy Birnbaum)
 * 12) Maritza Lamar, Karen Bernstein, Mildred Carson and Minerva Raven (Lisa Ortiz)

From Scooby-Doo

 * 1) Scooby-Doo (Frank Welker)
 * 2) Shaggy Rogers (Matthew Lillard)
 * 3) Fred Jones (Frank Welker)
 * 4) Daphne Blake (Grey Griffin)
 * 5) Velma Dinkley (Kate Miccuci)

From 4th Grade Mom

 * 1) Baby Mayra (Kayzie Rogers)
 * 2) Nelly Marcos (Lisa Ortiz)
 * 3) Iris Simpson (Roxanne Beck)
 * 4) Tina Morton (Megan Hollingshead)
 * 5) Chigusa Burgh (Lisa Ortiz)
 * 6) Erica Thomas (Roxanne Beck)

From Digimon Adventure 1

 * Tai, Kari, Agumon and Gatomon (Joshua Seth, Lara Jill Miller, Tom Fahn and Mary Elizabeth McGlynn)
 * 1) Matt, T.K., Gabumon and Patamon (Michael Reisz, Doug Erholtz, Kirk Thorton and Laura Summer)
 * 2) Sora Takenouchi and Biyomon (Colleen O'Shaughnessey and Tifanie Christun)
 * 3) Izzy Izumi and Tentomon (Mona Marshall and R. Martin Klein)
 * 4) Mimi Tachikawa and Palmon (Philece Sampler and Anna Garduno)
 * 5) Joe Kido and Gomamon (Michael Lindsay and R. Martin Klein)

From Mon Colle Knights

 * 1) Mondo Ooya (Derek Stephen Prince)
 * 2) Rockna Hiiragi (Brianne Siddall)
 * 3) Beginner (Philece Sampler)
 * 4) Luke (Lex Lang)
 * 5) Lailai (Melissa Fahn)
 * 6) Kahimi (Tifanie Christun)

From Star Fox: The Animated Series

 * 1) Fox McCloud (Joshua Seth)
 * 2) Falco Lombardi (Derek Stephen Prince)
 * 3) Slippy Toad (Rick Jones)
 * 4) Peppy Hare (Tom Gibis)

From The Cyber Cat

 * 1) Kick (Rick Jones)
 * 2) Mini (Terrence Schammel)

From Yu-Gi-Oh! Mix

 * 1) Yami Yugi Moto (Dan Green)
 * 2) Jaden Yuki (Matthew Charles)
 * 3) Yusei Fudo (Greg Abbey)
 * 4) Yuma Tsukumo (Eli Jay)
 * 5) Yuya Sakaki (Michael Liscio Jr.)
 * 6) Yusaku Fujiki (Jake Paque)

From Static Shock

 * 1) Virgil Hawkins (Phil LaMarr)
 * 2) Sharon Hawkins (Michele Morgan)
 * 3) Robert Hawkins (Kevin Michael Richardson)
 * 4) Richie Foley (Jason Marsden)
 * 5) Maggie Foley (Jean Smart)
 * 6) Sean Foley (Dan Lauria)

From Jackie Chan Adventures

 * 1) Jackie Chan (James Sie)
 * 2) Jade Chan (Stacie Chan)
 * 3) Uncle Chan (Sab Shimono)

From Phantom Investigators

 * 1) Daemona (Jocelyn Loewen)
 * 2) Kira (Cree Summer)
 * 3) Jericho (Scott Menville)
 * 4) Casey (Jason Marsden)

From Teenage Mutant Ninja Turtles

 * 1) Leonardo (Michael Sinterniklaas)
 * 2) Raphael (Frank Frankson)
 * 3) Donatello (Sam Regal)
 * 4) Michelangelo (Wayne Grayson)

From Untroubled Space Tours

 * 1) Gordon Hooper (Eric Stuart)
 * 2) Kerry Burghs (Lisa Ortiz)
 * 3) Kenny Marigold (Roxanne Beck)
 * 4) Nora Richards (Megan Hollingshead)
 * 5) Maron the Squirrel Girl (Kayzie Rogers)
 * 6) Monica MacDonald (Tara Jayne)

From Super Pig

 * 1) Kassie Carlin (Julie Maddalena)
 * 2) Heather Hogwarsh (Laura Summer)
 * 3) Prudence Plum (Caryn Rosenthal)
 * 4) Penny Round (Wendee Lee)

From UFO Baby

 * 1) Kelly Westwood (Tifanie Christun)
 * 2) Maureen Holiday (Colleen O'Shaughnessey)
 * 3) Natalie Wellington (Philece Sampler)
 * 4) Amanda Larkin (Colleen O'Shaughnessey)
 * 5) Christine and Brianna Flowers (Laura Summer and Anna Garduno)

From Glitter Force

 * 1) Emily Anderson (Laura Bailey)
 * 2)   Kelsey Ace (Colleen O'Shaughnessey)
 * 3)   Lily Parker (Alex Cazares)
 * 4)   April Swanson (Danielle Judovits)
 * 5)   Chloe Rose (Kate Higgins)

From Glitter Force Doki Doki

 * 1) Maya Aida (Debi Derryberry)
 * 2)  Rachel Larsen (Cassandra Lee Morris)
 * 3)  Clara Yotsuba (Melissa Fahn)
 * 4)  Mackenzie Mack (Stephanie Sheh)
 * 5)  Natalie Miller (Erica Lindbeck)
 * 6)  Regina and Nellie Knotty (Cherami Leigh and Laura Post)

From Tetris Attack

 * 1) Yoshi (Andrew Sabiston)
 * 2) Little Yoshi (Andrew Sabiston)
 * 3) Lakitu (Tom Kenny)
 * 4) Bumpty (Candi Milo)
 * 5) Casey (Debi Derryberry)
 * 6) Mom and Dad Penguin (Candi Milo and Ron Pardo)
 * 7) Poochy (Frank Welker)
 * 8) Flutter the Flying Wiggler (Nicole Oliver)
 * 9) Prince Froggy (Rodger Bumpass)
 * 10) Princess Froggy (Lisa Ann Beley)
 * 11) Queen and King Froggy (Tress MacNeille and Paul Dobson)
 * 12) Gargantua Blargg (Ian James Corlett)
 * 13) Lunge Fish and Junior Fish (Carlos Alazraqui and Elizabeth Daily)
 * 14) Raphael, Rebecca, Rina and Risa Raven (Dorian Harewood, Kimberly Brooks and Cree Summer)
 * 15) Boshi (Danny Cooksey)
 * 16) Birdo (Tara Strong)
 * 17) Hookbill Koopa (Jim Cummings)
 * 18) Naval Piranha (Cree Summer)
 * 19) Kamek and Kammy (Rob Paulsen and Kathleen Barr)
 * 20) King Bowser Koopa (Jim Cummings)
 * 21) Larry Koopa (Tom Kenny)
 * 22) Morton Koopa Jr. (Phil LaMarr)
 * 23) Wendy O. Koopa (Nicole Oliver)
 * 24) Iggy Koopa (Rob Paulsen)
 * 25) Roy Koopa (Jason Marsden)
 * 26) Lemmy Koopa (Candi Milo)
 * 27) Ludwig Von Koopa (Danny Cooksey)

From Donkey Kong: Animated

 * 1) Donkey Kong (Richard Yearwood)
 * 2) Diddy Kong (Andrew Sabiston)
 * 3) Candy Kong (Lori Alan)
 * 4) Dixie Kong (Maggie Blue O'Hara)
 * 5) Tiny Kong (Maggie Blue O'Hara)
 * 6) Bluster Kong (Rob Paulsen)
 * 7) Cranky Kong (Frank Welker)
 * 8) Funky Kong (Phil LaMarr)
 * 9) Lanky Kong (Rob Paulsen)
 * 10) Chunky Kong (Kevin Michael Richardson)
 * 11) King K. Rool (Richard Newman)
 * 12) Krunch (Danny Cooksey)
 * 13) Klump and Krusha (Billy West)
 * 14) Bumper the Badger (Matt Hill)
 * 15) Tiptup the Turtle (Candi Milo)
 * 16) Timber the Tiger (Tara Strong)
 * 17) Pipsy the Mouse (Chantal Strand)
 * 18) Drumstick the Rooster (Jim Cummings)
 * 19) T.T. (Samuel Vincent)
 * 20) Wizpig (Jim Cummings)
 * 21) Taj the Elephant Genie (Dorian Harewood)

Episodes (with a total of 39)

 * 1) Turtle Mania - Thomas Stories: Thomas Gets Tricked and Edward Helps Out (from A Place Unlike Any Other)
 * 2) Puppet Power - Thomas Stories:

Trivia

 * A crossover with Pikachu's Jukebox.
 * Kimiko's outfit: from Season 2, Episode 11: Master Monk Guan.
 * The 2019-20 episodes have been added to make them 39.
 * Thomas Stories are in a Mr. Conductor Mix.