The Legion of Substitute Heroes were founded by Polar Boy, Night Girl, Stone Boy, Fire Lad, and Chlorophyll Kid, five young heroes whose powers were not sufficient to earn them membership in the Legion of Super-Heroes. Their main arch nemesis was Captain Freeze. After receiving a consolation prize (a Legion flight belt), the five disconsolate teenagers decided to form a group that could pinch hit for the Legion. After several failures as a team, the Subs managed to save the Earth from an invasion by Plant Men while the Legion was off planet fighting a decoy armada of robot space ships. These Plant Men, the Legion later found out, were sent to earth by Captain Freeze who wanted to use them to distract the Legion while he went and stole the Mighty Shrink Ray. However the plot was foiled when Night Girl saw Captain Freeze sneaking into the Lab; he was caught and exiled to the planet Navoru.
At first operating in secrecy, the Legion of Substitute Heroes was gradually recognized by the real Legion as a valuable asset, most notably after the assault on the Citadel of Throon when the regular Legionnaires were all defeated and it was left to Polar Boy and Night Girl to lead an effective attack on the fortress and end the siege.
Members:
Fire Lad
Rainbow Girl
Chlorophyll Kid
Stone Boy
Former Members:
Polar Boy
Night-Girl
