Superman Presents Superboy Comic #99

In "Vengeance of the Super-Villains," Superboy, Mon-El, and Ultra Boy face a shocking betrayal when their parents attack them just before the Legion’s peace ceremony. As the Universal Trophy is set to be awarded, Chameleon Chief’s trap sets the stage for chaos—only for the heroes to break free and turn the tide, catching the Legion of Super-Villains off guard in their own lair.

When Superboy and Supergirl are forced to leave the Legion of Super-Heroes after failing to clear a kryptonite cloud from Earth, they make one final request: that the Legion welcome Sir Prize and Miss Terious in their stead. As their time in the future comes to an end, the two outcast heroes step forward, ready to take up the mantle of guardianship in a world that once rejected them.