Experimental Genetic Aliens are common alien guards found throughout the levels. They scratch when up close and spit acid when at distance. They come in two different but similar forms.
The first encountered form resembles a brownish imp-like creature. They are sometimes stored in canisters, which, when shot, can break open and release the alien inside.The second form is a tall, green, humanoid mutant. It is sometimes stored in capsules that can release the alien when shattered.