#OnThisDay in 1967 #TheDominators debuted in #AdventureComics #361 an #alienRaceOfMasterGeneticists with nefarious intent #ruledByACasteSystem dictated by #theSizeOfTheRedCircleOnTheirForehead #TheLegionOfSuperHeroes of #The30thCentury were tasked w #escortingThem during #peaceTalks 1987 #Invasion