The Legionnaires chase the escaped convict Dr. Eldor to the homeworld of the Proteans. They are saved from the Proteans by Unknown Boy. Who could this masked super-hero be?
Tag: Mon-El
Adventure Comics #313 Oct. 1963
Adventure Comics #300 Sept. 1962
Adventure Comics #316 Jan. 1964
Space raiders are stealing raw materials in order to create a super-weapon. While looking through mug shots the Legionnaires stumble upon the fact that Ultra Boy is really an escaped convict. The Legionnaires feel betrayed by one of their own!