What you forgot to bring up is how this is at all relevant, other than to show that you have some useless granule of knowledge in your head.

Yeah, he was, but this guy ain’t. All of the original line of Transformers were taken from other toy series, this is the only one people seem to be able to bring up, because, unlike the others that only existed in Japan, it is the only one that had a popular series in America.. Its kind of annoying.

Jetfire as a character, however, is completely created by Hasbro and the writers that have worked for Hasbro and its Japanese counterpart, Takara.

Now, Jetfire was technically an Autobot in the G1 series. Sort of. He wasn’t called Jetfire. Hasbro couldn’t or didn’t use the VF-1S in the show for several possible reasons, though no one is really sure of which reason is the one.

Jetfire’s story in G1 had him in cahoots with Starscream. Starscream and Skyfire (his in-cartoon name, gah!) were good friends and scientists (Starsceam a scientist?!) and went on exploration mission to prehistoric Earth. Skyfire got lost in a storm. They’re has been other iterations of Jetfire/Skyfire where he started as a Decepticon, such as in the super awesome Marvel G1 comic..

So, in short, yeah, Hasbro once used a toy from Macross/Robotech. They used a lot of toys from other toy companies. Jetfire/Skyfire can be an Autobot or a Decepticon depending on the universe, and quite a few other Transformers have also switched sides depending on the universe.