Scorponok (Beast Wars)
From Multiversal Omnipedia
Scorponok was a Predacon, loyal (to a fault) to Megatron. He transformed into a scorpion. When the quantum surge hit prehistoric Earth, Scorponok began to become a Transmetal, but fell into a volcano and was destroyed before the change could complete.
Japan
Scorponok was known as Scorpos. Other than being a Destron and follower of the True Path, he was otherwise identical.