True and the Rainbow Kingdom (Mr. Conductor Crossover)

Based on the 2017 Netflix original, here is a Mr. Conductor Crossover.

The Conductors of Shining Time Station

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

The Rainbow Kingdom Residents

 * 1) True (Michela Luci)
 * 2) Bartleby (Jamie Watson)
 * 3) Grizelda (Anna Bartlam)
 * 4) Zee (Dante Zee)

The Kids' WB!/Cartoon Network/FOX Kids Heroes

 * 1) Ash Ketchum, Gary Oak, Brock, Misty, Tracey Sketchit (Sarah Natochenny, Jimmy Zoppi, Bill Rogers, Michele Knotz and Craig Blair)
 * 2) Rikochet, The Flea, Buena Girl (Carlos Alazraqui, Candi Milo and Kimberly Brooks)
 * 3) Marilyn Shine, Malinda Doe, Susie Feeble, Emma Bore, Fanny Rogers and Tuesday Van Dour (Tara Strong, Jocelyn Loewen, Chantal Strand, Tress MacNeille, Cheryl Chase and Melissa Fahn)
 * 4) Sandra Larson, Floella Thompson, Maya Burlington, Hilary Brood, Aya MacDonald, Alexandra Hartman, Katherine Jordan, Christine Richards, Serena Hamilton and Julie Benjamin (Lisa Ortiz, Roxanne Beck, Leah Applebaum, Rachael Lillis, Kayzie Rogers, Mandy Bonhomme, Megan Hollingshead, Amy Birnbaum and Tara Jayne)
 * 5) Sakura Avalon, Meilin Rae, Madison Taylor, Rita, Chelsea and Nikki (Veronica Taylor, Roxanne Beck, Lisa Ortiz, Kayzie Rogers, Kerry Williams and Tara Jayne)
 * 6) Scooby-Doo, Shaggy Rogers, Fred Jones, Daphne Blake and Velma Dinkley (Frank Welker, Matthew Lillard, Frank Welker, Grey Griffin and Kate Micucci)
 * 7) Al Smith, Amy Sommerstein, James Carmichael and Mel Szyslak (Tom Kenny, Dionne Quan, Rob Paulsen and Nika Futterman)
 * 8) Felicia McCoy, Tawny McCoy, Terri Burton, Roberta Parsley, Ramona Hill, Mary Taylor, Marley Hanson, Nellie Carlen, Maritza Lamar, Karen Bernstein, Mildred Carson and Minerva Raven (Lisa Ortiz, Roxanne Beck, Leah Applebaum, Megan Hollingshead, Tara Jayne, Rachael Lillis and Amy Birnbaum)
 * 9) Yugi Moto, Joey Wheeler, Tristan Taylor, Tea Gardner, Seto and Mokuba Kaiba (Dan Green, Wayne Grayson, Sam Regal, Amy Birnbaum, Eric Stuart and Tara Jayne)
 * 10) Virgil Hawkins and Richie Foley (Phil LaMarr and Jason Marsden)
 * 11) Jonny Quest, Hadji Singh, Emily Harper, Harley Cruz, Jessie Bannon and Bruce Small (Jason Marsden, Phil LaMarr, Grey Griffin, Rosie Perez, Jennifer Hale, and Matt Hill)
 * 12) Daemona Prune, Kira Williams, Jericho Anderson and Casey Matthews (Jocelyn Loewen, Cree Summer, Scott Menville, Jason Marsden)
 * 13) Dexter, Dee Dee, Mandark (Candi Milo, Kat Cressida and Eddie Deezen)
 * Ed, Edd N Eddy (Matt Hil, Samuel Vincent, Tony Sampson)
 * 1) Courage, Muriel Bagge, Eustace Bagge (Marty Grabstein, Thea White and Arthur Anderson)
 * 2) Blossom, Bubbles, Buttercup (Amanda Leighton, Kristen Li and Natalie Palamides)
 * 3) Johnny Bravo, Carl, Bunny Bravo, Little Suzy (Jeff Bennett, Tom Kenny, Brenda Vaccaro and Mae Whitman)
 * 4) Mike Mazinsky, Princess Lulu and Og (Nika Futterman, Ariel Winter and Dee Bradley Baker)
 * Cow, Chicken, Weasel and Baboon (Charlie Adler and Michael Dorn)
 * 1) Numbuhs 1-5 (Benjamin Diskin, Lauren Tom, Dee Bradley Baker and Cree Summer)
 * 2) Ben Tennyson, Rook Blonko, Gwen Tennyson, Kevin E. Levin (Yuri Lowenthal, Bumper Robinson, Ashley Johnson and Greg Cipes)
 * 3) Rex Salazar, Bobo Haha, Agent Six, Rebecca Holiday, Noah Nixon (Daryl Sabara, John DiMaggio, Wally Kurth, Grey Griffin and Fred Savage)
 * 4) Omi, Kimiko Tohomiko, Raimundo Pedrosa, Clay Bailey and Ping-Pong (Tara Strong, Jennifer Hale, Eric Bauza and David Kaye)
 * 5) Chance Furlong and Jake Clawson (Charlie Adler and Tom Kenny)
 * 6) Zoey Hanson, Corina Bucksworth, Bridget Verdant, Kikki Benjamin and Renee Roberts (Amanda Brown, Andi Whaley, Bella Hudson, Kether Donohue and Mollie Weaver)
 * 7) Bloom, Tecna, Flora, Stella, Musa and Layla (Liza Jacqueline, Rebecca Soler, Kerry Williams, Amy Birnbaum, Lisa Ortiz and Vasthy Mompoin)
 * 8) Tai Kamiya, Matt Ishida, Sora Takenouchi, Izzy Izumi, Mimi Tachikawa, Joe Kido, T.K. Takaishi, Kari Kamiya, Davis Motomiya, Ken Ichijouji, Yolei Inoue and Cody Hida (Joshua Seth, Michael Reisz, Colleen O'Shaughnessey, Mona Marshall, Philece Sampler, Michael Lindsay, Doug Erholtz, Lara Jill Miller, Brian Donovan, Derek Stephen Prince and Tifanie Christun)
 * 9) Sonic the Hedgehog, Miles Tails Prower, Knuckles the Echidna, Amy Rose and Sticks the Badger (Jason Griffith, Amy Palant, Dan Green, Lisa Ortiz and Nika Futterman)
 * 10) Serena Tsukino, Amy Anderson, Raye Hino, Lita Kino and Mina Aino (Stephanie Sheh, Kate Higgins, Cristina Valenzuela, Laura Post and Cherami Leigh)
 * 11) Kassie Carlen, Heather Hogwarsh, Prudence Plum, Penny Round (Julie Maddalena, Laura Summer, Caryn Rosenthal and Wendee Lee)
 * 12) Ikki Tenryou, Koji Karakuchi, Karin Junlei, Erika Amazake, Rintaro Namishima, Samantha, Sloan, Spyke (Veronica Taylor, Amy Birnbaum, Roxanne Beck, Lisa Ortiz, Tara Jayne, Kayzie Rogers, Ted Lewis and Matthew Mitler)
 * 13) Tyson Granger, Ray Kon, Kenny, Kai Hiwatari and Max Tate (Marlowe Gardiner-Heslin, Daniel DeSanto, Alex Hood, David Reale and Gage Knox)
 * 14) Raphael, Leonardo, Michelangelo, Donatello (Frank Frankson, Michael Sinterniklaas, Wayne Grayson and Sam Regal)
 * 15) Kirby, Tiff, Tuff (Makiko Ohmoto, Kerry Williams and Kayzie Rogers)
 * 16) Dan Kuso, Shun Kazami, Joe Brown, Marucho Marukura, Runo Misaki, Julie Makimoto, Mira Clay, Alice Gehabich (Scott McCord, Zachary Bennett, Travis Ferris, Joanne Vannicola, Julie Lemieux, Katie Griffin, Alyson Court and Emilie-Claire Barlow)
 * 17) Yoh Asakura, Mortimer Manta, Anna Kyoyama, Rio, Len Tao, Trey Racer, Joco McDonnell, Ellie Elwood and Millie Marson (Sebastian Arcelus, Oliver Wyman, Tara Jayne, Sean Schemmel, Andrew Rannells, Michael Sinterniklaas, Matthew Charles, Kerry Williams and Amy Palant)
 * 18) Connor, Abby, Chip and Mong (Andrew Rannells, Veronica Taylor, Amy Birnbaum and Jimmy Zoppi)
 * 19) Flint Hammerhead, Tony Goodman and Sarah Goodman (R. Martin Klein, Brian Donovan and Tifanie Christun)
 * 20) Mushra, Sago, Binka, Yakumo Tatsuro and Kutal (Tom Gibis, Steven Blum, Bob Papenbrook, Philece Sampler and Peggy O'Neil)
 * 21) Mondo Ooya and Rockna Hiiragi (Derek Stephen Prince and Brianne Siddall)
 * 22) Kaito Tatsuno, Taki, Rena and Rick (Jason Spizak, Doug Erholtz, Philece Sampler and Michael Lindsay)
 * 23) Dorie Goodwin, Reanne Griffith, Mirabelle Haywood (Amy Palant, Rebecca Soler and Kether Donohue)
 * 24) Lorelei Brooks, Cynthia Mason, Jordin Hanson and Tamara Hudson (Cherami Leigh, Debi Derryberry, Colleen O'Shaughnessey and Danielle Judovits)
 * 25) Carla Manson, Ringo Burghs, Darryl Parsons, Yolanda Harrison, Marina Barton and Charlene Langley (Veronica Taylor, Kayzie Rogers, Amy Birnbaum, Rachael Lillis, Lisa Ortiz and Kerry Williams)
 * 26) Fox McCloud, Falco Lombardi, Krystal, Katt Monroe, Miyu, Slippy Toad, Peppy Hare, Fay (Joshua Seth, Derek Stephen Prince, Wendee Lee, Tifanie Christun, Colleen O'Shaughnessey, Rick Jones, Tom Gibis and Anna Garduno)
 * 27) Kelly Westwood, Christine Flowers, Brianna Flowers, Maureen Holiday, Natalie Wellington and Amanda Larkin (Tifanie Christun, Laura Summer, Anna Garduno, Colleen O'Shaughnessey and Philece Sampler)
 * 28) Lisa Brandon, Sweet Mint, Stephanie Carlson, Rita Harrington, Riley Edwin, Toni and Mika Morgan (Lisa Ortiz)
 * 29) Alicia Parker, Jamie Parker, Relena Parker, Shauna Blake, Lindy McCoy, Sally Anderson, Erika Harper and Mindy Lee (Julie Maddalena, Tifanie Christun, Anna Garduno, Laura Summer, Colleen O'Shaughnessey and Philece Sampler)
 * 30) Harriet Sanders, Kara Perkins, Alyson Oliver (Veronica Taylor, Lisa Ortiz and Kerry Williams)
 * 31) Ness, Jeff Andonuts, Paula Polestar and Foo (Amy Birnbaum, Kayzie Rogers, Lisa Ortiz and Tara Jayne)
 * 32) Kick the Cyber Cat (R. Martin Klein)
 * 33) Marina Liteyears (Wendee Lee)
 * 34) PaRappa the Rapper and Um Jammer Lammy (Veronica Taylor)
 * 35) Danielle Sanders and Mary Bell (Philece Sampler)
 * 36) Johnny Test, Dukey and Susan and Mary Test (James Arnold Taylor, Louis Chirillo, Ashleigh Ball and Maryke Hendrikse)
 * Gus, Wally and YAY-OK (Sean Cullen, Mark Edwards and David Berni)
 * 1) Pac-Man, Cylindria and Spiral (Scott McCord, Andrea Libman and Sam Vincent)
 * 2) Fangbone! and Bill Goodwin (Taylor Abrahamse and Colin Doyle)
 * 3) Joey Felt, Captain Atomic, Abigail Felt and Pauline Bell (Eric Bauza, Katie Griffin and Lisa Norton)
 * 4) Tyler Bowman, Kevin Reynolds, Theodore Roachmont and Jennifer Shope (Matt Hill, Richard Ian Cox, Lee Tockar, Tabitha St. Germain)
 * 5) Emily Anderson, Kelsey Ace, Lily Parker, April Swanson and Chloe Rose (Laura Bailey, Colleen O'Shaughnessey, Alex Cazares, Danielle Judovits and Kate Higgins)
 * 6) Maya Aida, Rachel, Clara, Mackenzie Mack, Natalie, Regina and Nellie Knotty (Debi Derryberry, Cassandra Lee Morris, Melissa Fahn, Stephanie Sheh, Erica Lindbeck, Cherami Leigh, Laura Post)
 * 7) Clover, Sam and Alex (Andrea Baker, Jennifer Hale and Katie Griffin)
 * 8) Marinette Dupain-Cheng and Adrien Agreste (Christina Vee and Bryce Papenbrook)
 * 9) Iris, Talia and Auriana (Kazumi Evans, Ashleigh Ball and Tabitha St. Germain)
 * 10) Arkayna Goodfey, Zayra Moonwolf, Piper Willowbrook, Emerald Goldenbraid (Alyson Court, Nicki Burke, Ana Sani and Evany Rosen)
 * 11) Atsuko Kagari, Lotte Jansson, Sucy Manbavaran (Erica Mendez, Stephanie Sheh and Rachelle Heger)
 * 12) Megan Griffin, Sharon Flynn, Cara Goodwin and Fiona Destien (Cindy Robinson, Colleen Villard, Ariel Winter and Karen Neil)

Episodes

 * 1) Super Duper Dance Party - Thomas Stories: Thomas Gets Tricked and Edward Helps Out