I think the iron giant would win easily because not even a nuclear missle can destroy him. Plus the iron giant has like 10 super powerful guns. Also the Iron Giant can repair itself. I dont think Optimus Prime would stand a chance. What do you guys say??
he kicks major butt.
He Eats Metal.
He would literally eat, digest, and crap out Optimus Prime.
Additionally, Iron Giant was voiced by Vin Diesel. Optimus Prime is a truck, and trucks are what?
Fueled by Diesel. Somehow that makes sense, and gives the Iron Giant a decisive advantage.
OPTIMUS PRIME, all the wayy. :D