[The special-effects helmet] was all manual, remote controlled […] There’s still a space in it for my head. I had it on just to make sure nothing goes wrong with the posture of the head or how tall it is in comparison to the other sequences. They must have had about 2000 tubes of K-Y Jelly […] just to get the effect of that slime coming out of his mouth. A lot of it was spread around on the face. I could barely see what was going on around me, except when I was in a stationary position, while they were filming. Then there were a few holes I could look through.
-Bolaji Badejo a.k.a the Xenomorph (Cinefantastique magazine in 1979)