Thomas and Twilight search for Arthur's Missing Pal is an upcoming Thomas/MLP:FIM/Lionsgate crossover to be created by Stuingtion.
Pal goes missing after Arthur leaves for his friends' water balloon fight because Arthur has forgotten to feed Pal. However, he and Buster are certain that D.W. did it, but D.W. denies any involvement. Arthur and his friends mount a search throughout Elwood City for the missing dog.
- Zecora, Stephen, Sharky, Mako, Willy, T.C., Hugs, Buzz, J.J., Socky, Skunky, 1206, The Miner Trains: (Steam Grindor, Steam Mech, Mucker, Steam Claw D., Steam Driller, Steam Sweeper, and Steam Exavator), Evan, Steamy, Puffy, Shai-Shay, Rattlesnake Jake, The Planet Trains: (Zip, Dazzlen, Dusten, Gustis, Rings, Uray, Tune, and Shiver), Dusty Crophopper, Bill and Ben, and Stanley guest star in this film.