Noble (BM)

Savage/Noble is one of the very, very, very few purely organic Transformers. His "robot" form resembles a werewolf (referred to as Noble), and his alt-mode is a dragon-creature (known as Savage).

His origins are unclear, but he seems to be Megatron after being stripped of all mechanical aspects, due to Optimus's use of the Plasma Energy Chamber. Savage/Noble was quickly accepted into the Maximal fold, and was immediately befriended by Nightscream. After the Maximals led him to Megatron's Citadel, Meg's made his move, and downloaded his spark into a Giant Warship (kind of shaped like his own head), leaving Savage/Noble a mindless beast.

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