Hud

Hud is a humanoid alien from the Generation 1 continuity family.

Hud is a Vrobian, part of a group of psychic vampires that feed off of the living essence of other beings until they waste away into nothingness. Hud's people normally have massive orb-like eyes and squirming tentacles over their mouths, yet can appear basically human if they choose to. They pacify their prey by mentally enthralling them with a combination of induced amnesia and confusion, along with their more non-threatening humanoid appearances.

Also, if you're a little kid reading comic books, he'll scare the CRAP out of you.

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