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) and Trembling Trevor (cameo)
- Season 12: Greetings, Montague! (not named; does not speak), The Importance of Being Billy (cameo) and Percy Gets a Promotion
- Season 13:
- Season 14: 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), Ace in the Hole (cameo)
Nelson is Based on a Real Black Truck.
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