Issue: #345
Last valuation update: 2026-10-22
The Legion of Super-Heroes devise a plan to escape the prison created by Nardo, the space alien, and his androids. Matter-Eater Lad escapes on his own accord, but gets caught and is punished by being put to death. Superboy, Mon-el, and Ultra Boy arrive in time to save him, and the rest of the Legion, but Matter-Eater Lad still gets hit by the ray guns. Something occurred that the ray gun didn't ki...
Creators: George Klein, Curt Swan, John Sikela, Edmond Hamilton
Characters: Superman, Bouncing Boy, Brainiac 5, Chameleon Boy, Cosmic Boy, Element Lad, Saturn Girl, Ultra Boy, Duplicate Girl, Invisible Kid, Lightning Lass, Matter-Eater Lad, Blockade Boy, Nardo, Mon-El