Remember the G1 episode where Springer, Rodimus, Magnus and Arcee are turned to humans. Well, does anyone know if that was the only GI Joe crossover that has ever happened in the cartoon series? And, had Optimus ever been turned human, would he look like Magnus' human version just different color coding?
There was also a reporter character who ended up being written into, like, 4 different shows that came out of that production company. I can't remember the character's name, but he showed up in Transformers, GI Joe, Jem and one other. I have no idea where to start for googling this, but I know there's a fan page about it somewhere. Wow, upon rereading what I wrote...that's about as helpful as posting nothing, isn't it?
No, it's not the only TF/Joe crossover. Marissa's dad appeared in one episode, and he was very obviously (although not explicitly stated to be) Flint. And no, human Optimus wouldn't look like human Magnus. G1 cartoon Magnus wasn't a repaint of Optimus with a suit of armor like the toy was. He just had the armored mode.
That's the dude! Okay, I gotta see if I can find that fan page again, because I thought it was neat. Edit: Okay...googling "Hector Ramirez" was a stupid idea. I guess it's a pretty popular name.
I dunno how credible this is but "in the episode Only Human Ultra Magnus, Springer, Rodimus Prime and Arcee found their minds transferred into human-mimicking "synthoid" bodies by the human crimelord Victor Drath." Found on (dont hit me) wikipedia. edit- with a picture