I would be a Decepticon, and go by the name of Lorentz Force. I would be able to transform into a stationary railgun cannon. I would also be able to generate an electromagnetic shield when in robot form.
I'd be an AutoBot, my transformation would be a 1989 Oldsmobile Cutlass Cierra that looked like it had been cobbled together from several other 1989 Oldsmobile Cutlass Cierras. And my name would be Frankenstien.