Ultra Magnus generally appeared as a chief lieutenant to the leader of what fictional group of sentient robots?
Optimus Prime Optimus Prime is a fictional character from the "Transformers" franchise. He is the leader of the Autobots. A fictional group of sentient robots that can transform into other forms (e.g: cars and other objects) He is the most iconic of the Transformers, being frequently featured in Popular Culture.
Prime (comics) Prime is a superhero created by Bob Jacob, Gerard Jones, Len Strazewski, and Norm Breyfogle. He debuted in "Prime" #1 under Malibu Comics' Ultraverse imprint, and was one of its flagship characters along with Mantra and Hardcase . The character design was credited to Bret Blevins . The character also appeared in the superhero group Ultraforce.