I only remembered Kotto, but forgot about Holder in that movie also.
Looking back, there were other black henchmen in the movie, like the guy with the steel-clawed hand.
Julius Harris played Tee-Hee, the henchman with the steel-clawed hand. Curiously, like Kotto, Harris played Idi Amin in the tv film “Victory at Entebbe”, which was shot virtually the same time as Kotto’s “Raid on Entebbe.”