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.
Juan Rico Juan "Johnny" Rico is a fictional character and the protagonist of Robert A. Heinlein's 1959 military science fiction novel "Starship Troopers". Rico is a space marine in the fictional "Mobile Infantry", an army group which is airdropped into combat by "dropships". He also appears in the 1988 "Starship Troopers" OVA series, the 1997, , and installments of the film series and the 1999 television series "".