The stars behind the masks of the alien costumes we see in the movies are usually quite beautiful. 
Neytiri in Avatar was played by Zoe Saldana
Diva Plavalaguna from The Fifth Element was played by Maïwenn Le Besco
The alien in Alien was played by Bolaji Badejo
Darth Vader in the Star Wars series was played by David Prowse
"Christopher Johnson" from District 9 was played by Jason Cope
Jeriba 'Jerry' Shigan in Enemy Mine was played by Louis Gossett Jr.
E.T. was played by Michael Pat Bilon
Eytukan was played by Wes Studi
Godzilla (from the original Godzilla films) was played by Haruo Nakajima
The Predator in Predator was played by Kevin Peter Hall
R2D2 in the Star Wars series was played by Kenny Baker
Chewbacca was played by Peter Mayhew
Neytiri in Avatar was played by Zoe Saldana
Diva Plavalaguna from The Fifth Element was played by Maïwenn Le Besco
The alien in Alien was played by Bolaji Badejo
Darth Vader in the Star Wars series was played by David Prowse
"Christopher Johnson" from District 9 was played by Jason Cope
Jeriba 'Jerry' Shigan in Enemy Mine was played by Louis Gossett Jr.
E.T. was played by Michael Pat Bilon
Eytukan was played by Wes Studi
Godzilla (from the original Godzilla films) was played by Haruo Nakajima
The Predator in Predator was played by Kevin Peter Hall
R2D2 in the Star Wars series was played by Kenny Baker
Chewbacca was played by Peter Mayhew
Face Behind The Mask - You can download Face Behind The Mask picture for free. Click the image to download the Face Behind The Mask.