Scorponok  

Black Zarak, スコルポノック

Dangerous, wily, and cunning, Scorponok (aka MegaZarak and BlackZarak) possesses both a keen mind and a great deal of raw, savage power. He is equally comfortable with maverick stratagems and brute force, though hes built more for the latter his animalistic alternate form bristles with weapons, from multiple paired cannons and the dreaded electro-stinger in his tail, to the crushing grip of his mighty claws. These traits combine to make him both a terrifying foe on the battlefield and a serious contender for leadership of the Decepticons. Often, only his arch-foe Fortress Maximus is capable of standing against him.