I dont recognize the lovely alien at the top left. Venusian maybe ?
She's from the 1962 Disney movie 'Moon Pilot'. An alien from Beta Lyrae.
Santa Claus Conquers The Martians is the Worst movie that I know of. A defining criteria is a movie so repulsive that it *cannot* be watched for more than a few minutes, which it does for me. Unlike Plan 9 from OS or Cannonball Run 2 for ex.