Den is a big hydraulic diesel engine.
Appearances
- Season 12: The Mavis Matrix (does not speak), Rheneas and the Risky Rendezvous (cameo), Bulgy Takes the High Road and Sidney the Renegade (does not speak)
- Season 13: Sam I Am and How Gator Stole Christmas (cameo)
- Season 14: Millie's Castle Hassle (does not speak), Merlin the Magical Engine, Dirty ‘Arry,
Specials:
Gallery
<gallery> <gallry>