Crumplezone

The largest inhabitant of Velocitron (yet speed-wise he can still smoke most off-worlders), Crumplezone is undeniably the brawn of the gruesome twosome formed with the psychotic Ransack. It's not that Ransack is really all that much smarter than Crumplezone, it's just that the big lug just tends to leave the thinking to others, going along with whatever scheme his best (and possibly only) friend Ransack has cooked up. Being bad is just easier, and a lot more fun. Plus, Megatron is less likely to blast him then.

In Ultima, Crumplezone's alt-mode is giant trike-like vehicle with a giant front wheel. All the better to smash his opponents.