Re: How easily do you recognize Trek actors w/out makeup?
. . .it's really their voice that helps with recognition.
This is one thing Star Trek excelled at. Many times actors made up as aliens had some of the most beautiful and interesting voices to listen to.
Moe: I'll take the blonde!
Larry: I'll take the brunette!
Curly: I'll take the Black and Tan!
--Wee Wee Monsieur (1938)