Other mistake: When Perceptor pops up to tell Blaster to radio Prime, Blaster acknowledges that Perceptor is there before he even sees him. And I doubt he could of heard Perceptor because of the amount of noise the lasers were making, and Perceptor didn't make any noise. (00:14:45)
Other mistake: The credits for the movie say that they are in alphabetical order, but Peter Cullen is listed before Scatman Crothers.
Other mistake: When Devastator throws a piece of the wall during the attack on Autobot city, his face is completely blacked out. Looks like they erased it and forgot to draw it back in.






Answer: Alpha Trion seems to have created these two robots with special abilities concerning sound. As all Transformers received new Transformation Forms from the arc after their "sleep", it might have been intentionally from the arc to give them Transformation forms similar to their abilities. However it is not mentioned in the series.
Christoph Galuschka ★