The most powerful tool at an actor’s disposal is their face, so there’s something to be said about delivering a memorable performance while wearing a mask or with their face otherwise obscured. Even if the mask is totally bitchin’, there’s a serious risk of making a character dull (literally any version of Cyclops) or flat-out ridiculous (the eternal lesson of Willem Dafoe’s Green Goblin). It’s hard to imagine Tom Hanks having the same impact as Forrest Gump had be been forced to do the entire film with a jack o’ lantern on his head, …