There's a difference between a threat and a villain. In Ridley Scott's Alien, the Xenomorph is the threat - but the villain has always been the Weyland-Yutani Corporation.
This is the jumping-off point for Loyalty, a one-page TTRPG with Hidden Role Game elements, in which a group of players have to avoid getting killed by the (non-trademark-infringing) creature, work out if any of their team is working for the (non-trademark-infringing) Company, and escape in their (non-trademark-infringing) ship.
(The above paragraph is jokey, but while Alien is the inspiration for the game, it is completely generic and you are able to insert whatever world you would like to build!)
Loyalty was created for the Roll Camera game jam, which features a selection of mini ttrpgs all based on movies! Check out some of the other submissions while you're there.