Operation: Aliens was a proposed animated series based on Aliens that was originally pitched by 20th Century Fox as a way to market Alien 3 as a Saturday morning cartoon show, but never aired. It evidently started production through an unknown Korean studio, but nothing is known about who exactly was involved or whether or not the alleged pilot episode was ever actually produced. No video related to the show has been found.
20th Century Fox had already planned the toy line and various paraphernalia for the show. The Kenner line was originally going to be under the Operation: Aliens brand name, but the name was changed since the show's production had been cancelled. It was evidently too late to change the name, though, for the Jigsaw puzzles, plaster molding set, board game, toy case, watch, and a few other items.