#OnThisDay in 1980 #Mammoth debuted in #NewTeenTitans #3 #comics #BaranFlinders #Austrailian #mutant #superStrongBehemoth with #limitedIntellect joins #DrLight’s #FearsomeFive with #hisSister & later #givesUpCrime butAgrees to join #DrSivana whoPromises to resurrect #theGlassShardsOfHisSisterSelinda