Heistheholderauniquesciencefictiontrifectainthatheistheonlyactortoappearinthe"DoctorWho","StarWars"and"StarTrek"franchises.HeplayedMrSininthe1977DoctorWhoserial"TheTalonsofWeng-Chiang",DroopyMcCoolinStarWars:EpisodeVI-ReturnoftheJediandKeenserinStarTrek.