The Good Guy: Optimus Prime (voiced by Peter Cullen)

Regular Quote: "We lost a great comrade, but gained new ones. Thank you, all of you. You honour us with your bravery."

The Possession: One of the original inhabitants of Cybertron, sealed away as too dangerous by Primus, is freed following the planet's destruction. He arrives on Earth and promptly possesses Prime.

Sensing his chance, he picks up Sam, then Transforms as he's in his hand, squashing the kid like a bug and spewing guts over a bawling Mikela.

Demonic Dialogue: "Humans! Hear me! I am now God of this paltry planet! You will all bow down to me or I will crush you like the f*****g insects you are to me! The one called Mikela - lick my love pump. It's next to the oil gauge."