- Doing It for the Art: MGM didn't want to shoot the nightmare train sequence, hoping to keep costs down. H. R. Giger financed the sequence himself, with $100,000 of his own money.
- Fake American: British actor Ben Kingsley as American scientist Xavier Fitch.
- Follow the Leader: While not a full-on Alien rip-off, Giger himself complained that there were too many similarities, starting with his involvement in designing the creature.
- Old Shame: Michelle Williams, who played the young Sil, doesn't remember fondly the film due to the amount of bullying she got after it was released.
- Playing Against Type: Michael Madsen, normally a villain, plays The Hero, with one particular scene establishing him as a Kindhearted Cat Lover.
- Star-Making Role: The first movie made model Natasha Henstridge into a sex symbol in the 90s.
- Unintentional Period Piece: The 1994 Northridge earthquake and the damage that was still left over from it is briefly mentioned near the start of the first film. Normally this wouldn't be that big of a deal, but near the end of the story Sil hides away in a cavern to give birth, and Laura says that the entrance to the cavern "must have been created by the earthquake". Modern-day viewers who don't remember the Northridge earthquake (or don't get that it's what Laura's referring to) will likely be left scratching their heads and wondering "what earthquake?"
- What Could Have Been:
- The treatment for the film was called The Message and was more of a police procedural, with the alien being created by a "bathtub geneticist" who had saw his project aborted.
- An earlier draft of the script had the young Sil killing a friendly taxi driver. In order to keep the character appearing sympathetic - and to make the murder of the conductor more shocking - it was changed to a tramp attacking her and getting killed in self defence.
- Giger had envisioned more stages of Sil's transformation, but the film only employed the last one.
- The nightmare sequence where Sil imagines herself mating with a male alien was about twenty minutes long originally and far more graphic. Giger disowned the final version, feeling it was too short and poorly edited.
- Giger also disliked the ending the scripwriters had created, feeling it was too similar to both Alien3 and Terminator 2: Judgment Day. He eventually convinced them to finish Sil by headshot and not with fire.
- An early idea for this ending was an intense showdown in a movie theatre where Alien would be shown in the background. In this ending military and police forces have to be called in, culminating in Laura blowing Sil's head off with a rocket launcher. The baby would crawl out of the corpse but then die in an explosion.
Trivia / Species