Legion of Super-Heroes 279 (Sep 1981) NM- (9.2)

Castle Grimbor Must Fall!

Script: Roy Thomas

Pencils: Jim Janes

Inks: Frank Chiaramonte

Colors: Gene D'Angelo

Letters: Ben Oda

Characters: Legion of Super-Heroes [Lightning Lad; Saturn Girl; Mon-El; Princess Projectra; Karate Kid; Colossal Boy; Star Boy; Wildfire; Shrinking Violet; Cosmic Boy; Duo Damsel; Blok; Phantom Girl; Bouncing Boy; Shadow Lass; Light Lass]; Reflecto [revealed to be Superboy]; Grimbor the Chainsman; Marte Ida Allon

Synopsis: Grimbor's Cosmic Chains continue to constrict Earth's atmosphere but the Legion finally defeats him with the help of Reflecto, whose torn costume reveals a red "S" underneath after he collapses.