#OnThisDay in 1980 #Mammoth debuted in @dc.com #NewTeenTitans #3 #comics #BaranFlinders #Austrailian #mutant #superStrongBehemoth with #limitedIntellect joins #DrLight’s #FearsomeFive with #hisSister later #givesUpCrime but agrees to join #DrSivana who promises to resurrect #theGlassShardsOfSelinda