Stephen is a Yellow Tender Engine who is also known as The Rocket.
- Season 13: Duck and the Quack Attack (mentioned), Victor's Loco Motives, Rust or Bust, Sam I Am (cameo), Ivo Hugh's Day at the Zoo (cameo), Sideplates and Skirmishes and How Gator Stole Christmas.
- Season 14: Millie's Castle Hassle, Cabless Companions.
- Season 15: Nightmare on Sodor (fantasy,cameo), Polar Express Coming Through!.
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