Always was, always will be. Spock. Played by Leonard Nimoy in the original series.
I quite like Zachary Quinto who plays him in the recent Star Trek movies. I haven’t seen the new outing of a new Star Trek series with Spock played by a different actor, and Captain Pike before Captain Kirk took over the part.
Anyway this was drawn at an old website called sketchfu which is sadly missed by a lot of people.