Nelson is a Black Truck. He works Hard at The Construction Company.
- Season 10: Lorry's New Flatbed
- Season 11: The Great Western Way, Big City Rumor (cameo), Trembling Trevor (cameo), Wooden Brakes (cameo), and BoCo and the Cocoa (cameo)
- Season 12: Greetings, Montague! (not named; does not speak), The Importance of Being Billy (cameo) and Percy Gets a Promotion
- Season 13: Bert's Arlesdale Fail, The Duke of Hazard, Rust or Bust (cameo) and Oliver's Fossil Fright
- Season 14: Hugo Takes Flight and Flat Stanley (cameo)
- Season 15: Roundhouse Roulette (cameo), For Whom The Belle Tolls (cameo), Ice Ice Daisy (cameo) and The Island of Misfits Engines (cameo)
- Season 16: Painting the Rosie's Red (cameo), Knock It Off, Stanley (cameo), Ace in the Hole (cameo)
- Season 17: Unidentified Flying Scotsman (cameo), Dustin the Really Useless Engine (cameo), Oliver Confusion (cameo), Diesel Gets the Bronze (cameo), and Para-Norman Activity (cameo)
- Season 18: Santa Claws (cameo)
Nelson is Based on a Real Black Truck.