Quote Originally Posted by GoktimusPrime View Post
Neither did Tigerhawk. His TM2 body was created purely by the Vok without any apparent contact with a Transmetal Driver. It seems that the Deluxe and Mega TM2s were created by the driver, but the Ultras had different origins (again, really because Hasbro wanted them in the show -- remember that this part of Season 3 was written in a rush because Hasbro had ordered the cancellation of the series and the writers were trying to wrap up loose ends _while_ trying to introduce the last batch of toys at the same time).
But the Transmetal Driver is of Vok origin - thus Tigerhawk got his 'transmetal' powers directly from the source.

But I think the reason why Optimus Primal got a more "massive" upgrade was because he mingled his Spark not only with a G1 Titan like Optimus Prime, but because said Spark had been in direct contact with the Matrix -- and he also transferred Prime's Spark directly from the Matrix vessel. G1 Megatron's Spark, while also a mighty Titan, wasn't in contact with the Matrix. I think that could explain why he didn't upgrade into an "Optimal Megatron."
Megs got an equally "massive" upgrade. Sure he doesn't have a 4th mode, but he grows quite considerably in both size and power, so much so that he is actually able to best Primal in their final fight.

Optimal Optimus' body has no organic motifs on it at all, unlike other Transmetals. His robot and beast modes are completely robotic/mechanical in appearance.
And what organic motifs does TM Rattrap have?