Mr. Conductor and Sammy Meet Mary Kate and Ashley In Action is a crossover series that is made by Pikachufreak. It stars Mr. Conductors 1, 2 and 3 (all from Shining Time Station, played by George Carlin, Alec Baldwin and Michael Brandon) and Sammy, Sharlene and Wiggy (all from Sammy's Story Shop) who, along with characters from various Kids' WB shows, will join Mary Kate and Ashley Olsen in their full-time action adventures. Only Thomas Stories from Seasons 1-7 will be used, but none from Seasons 8-Present.
Major Guest Stars
- Ash Ketchum, Mary, Misty, Brock, Team Rocket and Giovanni (all from Pokemon)
- Scooby-Doo, Fred Jones, Daphne Blake, Shaggy Rogers and Velma Dinkley (all from What's New, Scooby-Doo?)
- Jackie Chan, Uncle Chan, Jade Chan, Viper and Tohru (all from Jackie Chan Adventures)
- Virgil Hawkins and Richie Foley (both from Static Shock)
- Rikochet, Buena Girl and The Flea (all from Mucha Lucha)
- Al Valentine, James Rogers, Amy Lambert and Mel Blake (all from Hoop-a-Joop)
- Yami Yugi, Joey Wheeler, Tristan Taylor, Tea Gardner, Seto Kaiba and Mai Valentine (all from Yu-Gi-Oh!)
- Omi, Kimiko Tohomiko, Raimundo Pedrosa and Clay Bailey (all from Xiaolin Showdown)
- Sakura Avalon, Meilin Rae, Madison Taylor, Rita Sasaki, Chelsea Mihara and Nikki Yanagisawa (all from Cardcaptors)
- Daemona Prune, Kira, Casey and Jericho (all from Phantom Investigators)
- Ace Bunny, Tech E. Coyote, Lexi Bunny, Danger Duck, Slam Tasmanian and Rev Runner (all from Loonatics Unleashed)
- Lan Hikari, Dex Ogreon, Maylu Sakurai, Yai Ayano and Eugene Chaud (all from Megaman NT Warrior)
- Cliff Feltbottom, Lube Ignatius, Shriek Dubois and Rancid Rabbit (all from CatDog)
- Kimiko will wear her The Emperor Scorpion Strikes Back outfit in this crossover.