Badejo, seen here with dresser John Birkinshaw inside Bray Studios. The design for the alien's costume was the brainchild of H.R. Giger, who created concepts for many of the sets. Made from latex, the fitting process was long and arduous, not to mention uncomfortable for Badejo.
The costume's tail was controlled separately and made it difficult for Badejo to sit down between takes. When fully fitted, the creature stood seven feet tall -- not ideal considering the set of the spaceship Nostromo was only 6"7 high.