Sam is a large American tender engine.
- Season 13: Who Stole The Coal?, Sam I Am, Toad Gets Towed (cameo) and How Gator Stole Christmas
- Season 14: Millie's Castle Hassle (mentioned), Henry Gets Stumped, Hiro and the Heat Wave (cameo),
- Season 15: Roundhouse Roulette (does not speak), Philip Finds a Friend (cameo), The Crosby Coalition
- Season 16: Marion Had a Little Lamb (cameo), Painting the Rosie's Red (cameo)
- Season 17: Bold Slow Coach (cameo), Oliver Confusion (cameo), Diesel Gets the Bronze, Toby, Or Not Toby (cameo)