#OnThisDay in 1973 #Tyr debuted in @dc.com #SuperboyAndTheLegionOfSuperHeroes #comics #197 #30thCenturyScourgeOfHisGalaxy brainwashes #TimberWolf to sabotage #TheLegionOfSuperHeroes & upon defeat #hisGunArmEscapesIntoSpace& #returnsTwoIssuesLaterToRescueItsMaster & try again by #armingSuperboy!