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
All the female Legionnaires come down with a previously unknown ‘crimson virus’ which seems incurable. Who could be to blame for this? How about a mysterious individual named Satan Girl?
Adventure Comics #300 Sept. 1962
The Legionnaire’s powers start malfunctioning; an emergency call is made to Superboy to see if he can help. The culprit is Urthlo, a masked adversary with the ability to turn the Legionnaire’s powers on and off with the flick of a switch.
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!
Legion of Super-Heroes #269 Nov. 1980
It’s election day on Earth and the Fatal Five (and their new ultra-secretive leader) crash the party. Who is the Dark Man and what gripe does he have against the Legion?