I'd probably be an Autobot that would be a triplechanger. This is simply because I love speed and swimming. For my first Altmode I imagine I would transform into a motorcycle and the second would be I guess a jet-ski. My design would be perhaps like Arcee's from Prime but green and a bit more thicker and larger concerning the legs and torso, kind of like Strongarm. (This is hard to put in words isn't it?) I would imagine for battle mode I would have a battle mask for my mouth and visor to drop over my optics. You know, kind of like Grimlock.

As for my Transformer name, I guess it would be Jetcycle.

 

Not to be unoriginal, but Legends Galvatron.

A Megatron Headmaster to a Galvatron Transtector with a tec starfighter and cannon mode. Utilizing the hybridization of Megatron and Galvatron, the big change would be to his weapon; utilizing Megatrons black hole connection to pull antimatter, Galvatrons cannon would be an advanced technologies Nuclear Lance; a many generations advanced Casaba Howitzer.

 

Something like Ravage but a tiger or a cougar instead of a panther.