Thomas & Friends: All Engines Go
Whiff (voiced by Joe Pingue in the US and Matt Coles in the UK) a bit of a tech whizz who loves inventing new things. He believes that any old or broken parts can be re-used and recycled into something new and useful.  Whiff also seems to know a lot about the history of Sodor, like how there used to be tunnels under Lookout Mountain.