Thomas the Tank Engine

Thomas is an ancient sentient train who was modified to battle a mutant t-rex during the zombie apocalypse. Long before that, Thomas terrorized the Skyrim citizens as "The Dragon". Thomas was also swapped with the Hogwarts Express during Voldemort's plot to kill Dumbledore.

Appearances
Skyrim BUT LEGO

LEGO Thomas The Tank Engine BUT it's an Anime

Harry Potter missed the train