#OnThisDay in 1966 #DrRegulus debuted in #AdventureComics #348 maniacal #ZaxtonRegulus of #30thCenturyEarth takes on #TheLegionOfSuperHeroes & reveals #SunBoy’s #SecretOrigin explaining that #heTrappedHimInAnAtomicReactor after #heSpoiledHisAttemptAtProducingMultipliedSunEnergy from #radioactiveGold