#OnThisDay in 1978 #KillerFrost debuted in #FirestormTheNuclearMan #comics #3 #scientist #CrystalFrost’s #unrequitedLove for #ProfessorMartinStein leaves her #accidentallyLockedInAThermofrostChamber & #ableToAbsorbHeatFromTheAtmosphere ends up icing both #Superman & #Firestorm #inHer2ndAppearance