Hugo Weaving As Red Skull In "Avengers" Movies, Replaced By Ross Marquad
Hugo Weaving portrayed an excellent Red Skull, so it was only natural for the Marvel executives to try and get him for several movies. Because of monetary problems, Weaving couldn't portray the character for Infinity War, and Ross Marquand came to replace him. A professional voice impressionist, Marquand copied Weaving in almost every aspect.
Also, how would anyone be able to tell when some background character in GoT was replaced? There were a ton of them, and they all looked the same.