Scruff (also known as Classic Scruff) is an engine in the Classics theme.
- Mono Scruff
- Scruff as The Atom (from DC Super Friends 9-Pack 2 (2016))
- Space Scruff
- Scruff as Armor Batman (from DC Super Friends 9-Pack 3 (2017))
- Beach Scruff (from 30 MINIS! (2018))
- Neon Glow Scruff (from Neon Glow in the Dark Pack 1)
- Scruff (from Spring Basket)
- Icky Scuff
- Scruff has a moulded face, while other engines have computer printed ones. Gator, Ben, Bill, Diesel 10, Flynn, Duck and all their variants also have this feature.
- Scruff is one of six engines in the 2016 series to not have any variants.