[5] At first operating in secrecy, the Legion of Substitute Heroes is gradually recognized as a valuable asset, most notably after the assault on the Citadel of Throon when the regular Legionnaires are all defeated and Polar Boy and Night Girl are left to end the siege.
[6] Later recruits to the Legion of Substitute Heroes include Antennae Lad, Color Kid, Double-Header, Infectious Lass, Porcupine Pete, Dream Girl, and Star Boy.
[citation needed] The team fell into disuse during the Bronze Age of Comic Books since their simple, young-readers-oriented concept left them out-of-place in the dark, socially relevant stories of the era.
[3] Exceptionally good sales on the humor-driven issue led to DC publishing a Legion of Substitute Heroes Special on April Fool's Day, 1985.
In the Legion series launched in 2004, Polar Boy and Chlorophyll Kid (renamed Plant Lad) appear as a part of the Wanderers led by Mekt Ranzz.
In part five of the Superman and the Legion of Super-Heroes story arc in Action Comics, Fire Lad, Stone Boy, Chlorophyll Kid, and Rainbow Girl are called in to help battle the Justice League of Earth, a tyrannical, xenophobic association.