Guardian robot

:Guardian Robots are a type of transformer in Generation 1 continuity.

Originating as the Quitnesson's Dark Guardian robots the Guardian robots of the Golden Age of Cybertron were powerful giant blue robots that kept the peace. They gave the Decepticons much trouble durring the early days of the war but were eventually overcome.

Only one, Omega Supreme, the Guardian Robot of the Crystal City, was ever named, had a distinct color scheme, was shown to be sentient or able to transform, but it was not really revealed if he was indeed unique amongst them in those regards.

Trivia

• Though no toy of the Guardian Robots was ever made they are clearly a slightly more Derry-ized, chubbier version of Omega Supreme.

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