#OnThisDay in 1987 #IronMunro debuted in @dc.com #YoungAllStars #comics #1 #ArnoldMunro #Colorado #highschooler with #superStrength inherited via #experimentalSerum #postCrisis #GoldenAgeSuperman #template inspired by #twoFictionalSupermen who predate #KalEl including #PhilipWylie’s 1930 #Gladiator