Huffer in the art picture.
To say that Huffer is cranky is an understatement. Huffer's the poster boy for whiny pessimism. He complains and grumbles his way through every day, especially since he's been shipwrecked on Earth. If he thought his existence was unbearable before, it's intolerable now, and he'll certainly let you know. There is no light in his dark hours... which is all the time.
Despite what a joy he is to be around, he's very effective at his job. A construction engineer, he can whip up anything of any complexity. Unfortunately, he'll be kicking and screaming the whole way.
His alt-mode is a Cab-Over-Engine Semi Truck Cab.
Huffer in Cab-Over-Engine Semi Truck Cab Mode.