Stephen is a Yellow Tender Engine who is also known as The Rocket.
first appearance: Oliver's Eleven
- 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, S.C.Ruffey's Sweet Tooth (cameo)
- Season 15: Nightmare on Sodor, Polar Express Coming Through!
- Season 16: Marion Had a Little Lamb (cameo)
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