GoBots did it first.

> On the distant planet GoBotron dwell the GoBots, a race of robots able to transform themselves into amazing fighting vehicles. As war rages between the noble Guardian GoBots and the evil Renegade GoBots, the Renegades escape to earth--with a plot to enslave earthlings and conquer the galaxy. But the Guardians follow, and the battle begins.

Challenge of the GoBots: https://amzn.to/447cTgN