Transformers g1 (1985)

Millions of years ago on Cybertron, the Autobots prepare to leave their home in their ship. During the journey into outer space, Megatron and his Decepticons attack them, initiating a battle aboard the Autobot ship. Later, they crash on the primitive planet Earth. Both Autobots and Decepticons are rendered unconscious. Millions of years later, Teletran One activates, repairing both the Autobots and Decepticons and assigning each one an alternate Earth mode.