If Reboot counts as anime, then Beast Wars counts as anime. From there it's a trivial leap to count the original Transformers as anime - it had some episodes done by TOEI, Jetfire was a Valkyrie, and it was based on a Japanese toyline, if nothing else.
I'm fine with that.
But if Transformers counts as anime, then the Transformers comics must logically count as manga.
The transformers comics have a random appearance of Spiderman, the Dinobots found in the Savage Land, a GI JOE crossover, and a plot which compares unfavorably to the vast majority of manga.