Xenomorphs from the Alien franchise have plagued space travelers for years. We've seen them tangle with Ripley, all kinds of military units and even the Predators, who are some of the most talented hunters in the universe. And the Xenomorph proved just how deadly they were when they drifted into the Wildstorm Universe -- one of the many worlds of the DC Multiverse -- and faced WildC.A.T.s and StormWatch in Warren Ellis and Tom Raney's 1998 crossover WildC.A.T.s/Aliens.
In the Wildstorm Universe, StormWatch is a group of superheroes that was sponsored by the United Nations and stationed above the Earth in the SkyWatch satellite. Overseen by the Weatherman, the team's prominent members included Batallion, Winter, Hellstrike, Fuji and Fahrenheit but the events of the WildC.A.T.s/Aliens one-shot that forever changed the landscape of StormWatch. As one era of StormWatch came to a close, Ellis and Raney were interested in playing with the idea of killing off all the members who wouldn't be moving on to StormWatch's successor team, the Authority.
When a Skywatch escape pod crashes into the New York City and the WildC.A.T.s are notified. Flint, one of StormWatch's heroes, is scarred from the crash and describes the attack from what's left of her scattered memories. "I remember something on my face, pushing -- But I closed my mouth, locked my jaw... It could have been a Daemonite." The WildC.A.T.s is a covert action team that was created by a group of immortal aliens known as the Kherubim to slay the Daemonites, so they quickly assemble their ranks and teleport on to the space station to investigate Skywatch and search for survivors. In the control room, they scan surveillance footage of the attack and see one of Aliens' iconic facehuggers face hugger for the first time. After scans locate a large heat signature in the Cold Penitentiary, they theorize the motion detectors could be pinging the station's survivors.
It doesn't take long for the WildC.A.T.s to realize that they've walked blindly into a situation where they find themselves at a clear disadvantage. The covert action team teleported directly into a Xenomorph nest. Throughout SkyWatch. bodies are stuck to the walls with blown-out chest cavities and there are face-hugger eggs everywhere. A herd of xenomorphs quickly attack the WildC.A.T.s. Void is injured when one punctures her stomach. Maul has his hands badly burned by their highly acidic blood when he rips one in half, and Zealot's blades start warping from the acid as well.
The WildC.A.T.s quickly retreat from the nest to regroup. They embark through the station and encounter many of the slaughtered crew members along the way. In the officers' lounge, they find the remains of two of StormWatch's original members: Hellfire and Fuji. It looks like these two '90s heroes were melted in a pool of Xenomorph blood. Warblade quickly shreds an attacking Alien and urges the team to keep moving. That's when they find the remains of Fahrenheit hoisted on a Xenomorph's claw with her guts hanging on the floor. The battered WildC.A.T.s flee and rally with the surviving StormWatch members in a locked-down cryostorage sector where Jackson King, Christine Trelane, Winter and 96 other crew members are hiding out.
The WildC.A.T.s and StormWatch know that a single Xenomorph touches the Earth's surface, it could spell doom for the entire human species. After Grifter and Zealot find the Alien Queen and blow her up with a grenade bandolier, they quarantine the rest of the Xenomorphs and plan to crash the entire space station into the Sun. However, Winter stays behind to pilot the ship and is assumed dead, although his energy absorbing abilities allowed him to survive his imprisonment in the sun.
While the Xenomorphs didn't manage to kill every member of StormWatch, their attack on Skywatch essentially ended the version of StormWatch that had been in existence since the early '90s. This attack also set up the formation of the Authority, the controversial and iconic group that was largely made of surviving StormWatch veterans and defined the next major era of the Wildstorm Univers.