Alien Vs. Predator
In a perfect world, crossovers would be relegated to comics and left there for good. Superheroes constantly show up in each others’ lives, saving the day or waging war and being generally epic. Just look at a few of Marvel’s crossover features to see that there can be success in this idea. The only reason these work, however, is if there is a logical reason for the forces described to be meeting in the first place.
So how does a battle between these two terrifying extraterrestrials begin? Well, one easter egg found in Predator 2 was enough to get this idea off the ground and effectively ruin both franchises for fans. The idea that Predators hunt Aliens as a rite of passage is just mind-numbingly stupid. It also creates plot holes large enough to walk a cargo-loader through.
Maybe I should chalk this up to being a nerd, but if the Aliens were first discovered on Earth in 2004, then why is everybody so surprised when they reappear over 100 years later in deep space? Because of this strange twist, I’ll count AVP as a prequel, but also because it is awful. Its dismissal from canon is the only small pleasure fans can get from it. Despite many people’s hatred for Prometheus, it’s easy to say that AVP as an alternate prequel would be even worse.