Master Mouth

Master Mouth is an alien in the Generation 1 continuity family. He is also known as Mister Mouth, Mister Master, and "Your Mouthship".

Master Mouth is the giant red fanged ball with a head crest. Yes, he's just as goofy as he looks.

Master Mouth is the leader of the Mecannibals' trading party near Grand Central Space Station. (As no other group of Mecannibals is known, he may be the leader of the whole race.) He can be distinguished from other Mecannibals by his crest. A bit of a drama queen, he is also noted for being a fair trading partner, and for liking to make deals and eat at the same time. He seems to be under the impression that watching some poor robot being messily eaten alive will make his trading partners more agreeable. He might be right.

From Teletraan I: The Transformers Wiki, a Wikia wiki.