Batman/Aliens is a crossover between the Batman and Aliens comic book franchises. It was published in 1997. Batman parachutes into the jungle near the Guatemala and Mexico borderline, investigating the disappearance of a Wayne Enterprises geologist. He encounters an American Special Ops team hunting a target, and both are set upon by the Aliens. Several members of the team are killed, but along the way Batman becomes familiar with the Aliens' life cycle, and collects two facehuggers in specimen jars.