#onThisDay in 1966 #OceanMaster debuted in #Aquaman #comics #29 #OrmMarius #TheSeaKingsHumanHalfBrother who #resentedHisHeroicSibling #developedAmnesia & #turnedToCrime with #SeaPirate identity while Aquaman often struggled with bringing him to justice #NealAdams & #Deadman help unlock his memories