Cyclonus (Transformers G1)⚔️

Among the Decepticons, finding a truly loyal and competent second-in-command is nearly impossible. Cyclonus is the exception to that rule. Created by Unicron, Cyclonus is a being whose loyalty to Galvatron and the Decepticon cause is so intense that it excludes most other emotions and interests from his mind. He is dedicated to destruction in the name of his leader.

He also has the brains to back up that dedication, the power to enforce Galvatron's will, and the initiative to formulate plans and carry them out. Cyclonus could easily rule the Decepticons himself if he so desired, either as a power behind the throne or by outright overthrowing his psychotic master. His responses to any suggestion that he do so? "All hail Galvatron!"

It's actually surprising that he's so loyal, when you consider that he alternates with Ultra Magnus as Galvatron's personal punching bag.