- "Seriously? My uncle Frank, he was corps too. Third trip out he ended up in the middle of the Cordalis Police Action. He come home, he says, "man, when I signed, I did not expect to end up in that shit." And he meant it. But boy. If he could see this...He'd god damn welcome a little police action."
- ―Cross (from Alien vs. Predator: Life and Death)
Cross was a member of the United States Colonial Marine Corps. He was part of a 31-Marine platoon under the command of Captain Paget, aboard the combat ship Hasdrubal that landed on the planet LV-797, kick-starting a massive series of events that led to an all out battle for survival against a clan of Yautja, mutated Xenomorphs and the godlike Engineers.
Cross was notably one of the few survivors of the disastrous operation.
Biography
Cross was part of the combat ship Hasdrubal on a mission to prosecute any potential illegal prospectors on the planet, LV-797, nicknamed Tartarus. The Hasdrubal was serving the interests of the Weyland-Yutani Corporation, which had scheduled the planet for terraforming.
After the Marines landed on Tartarus, they were soon attacked by a clan of Yautja, who were protecting a recently discovered Engineer Juggernaut, resulting in devastating losses. Eventually, the Marines managed to lift the ship, with Singer intending to send it to the nearest USCM facility, Ganymede Station. Cross was presumably part of Paget's squad during the mission.
The squad returned to the Hasdrubal, but were forced to follow the Juggernaut for six days to an unspecified destination after an Engineer, unbeknownst to them had awoken within the ship and taken control of it. After landing on LV-223 and picking up Sergeant Roth's squad, who had previously infiltrated the Juggernaut, Roth confirmed to the Marines that fellow survivor Chris Hanlock had been left behind on the moon, and wanted to return. As a result, Paget organised an operation to rescue Chris, to which Cross volunteered for.
The squad landed back on LV-223 and began exploring the terrain, before Chris' wife, Jill suddenly picked up her signal. Following the revelation that Chris was impregnated with a Queen, Azzopardi and the squad were ambushed by a horde of Xenos, and later the Second Engineer, which had awoken to purge all life on the planet.
However, the squad managed to retrieve Chris after the hive's current Queen erupted from the ground and assaulted the Engineer, impaling it with her tail. In the ensuing chaos, they returned to their dropship, only to see it in ruins (previously destroyed by the Engineer). Paget attempted to contact the Hasdrubal, but with no reply, the squad unaware that it had been boarded by the Tartarus Predator clan.
Stand-off at the temple
- "The freight bus is en route, sarge -- touchdown in thirty minutes."
- ―Cross (from Prometheus: Life and Death - Final Conflict)
As Paget concluded that the group had lost contact with the ship, the group decided to retreat back to the Engineer temple that Roth and his squad initially encountered. The squad returned to the temple to set up camp and waited for one of the Hasdrubal's automatic freight buses to pick them up. Roth subsequently ordered Cross and Freebody to secure the perimeter. Whilst the two were conversing during their patrol, they were ambushed by Xenomorphs, but then subsequently saved by Ahab and Galgo Helder, who had finally managed to catch up with the group. Galgo subsequently informed Freebody of trouble, pointing her to the Tartarus Clan approaching them.
The Tartarus Predator clan soon arrived, seeking revenge from their previous encounter with the Marines. After a confrontation between Ahab and the clan leader, the clan sided themselves with the Marines against an upcoming army of Xenomorphs approaching the temple, hellbent on retrieving Chris. With Cross attempting to establish a mobile link to the freight bus, the Marines and Predators both put up a tremendous effort against the Xenomorph army but their numbers began dwindling, the Alien horde seeping through. In a last ditch effort, Chris sacrificed herself by blowing herself up, alongside the Queen inside of her, sending the Xenomorphs into a retreat.
The Tartarus clan took their leave alongside Ahab whilst the Marines waited at noon for the freight bus to arrive.
The next day, the squad were attacked by the Second Engineer, who had survived the battle with the Queen, causing the Marines to retreat inside the temple. Jill suggested using the Engineer's black goo against it. The rest help her grab an ampule and poured it over the hallway where they first entered. The Engineer arrived and stepped on the liquid. The liquid reacted aggressively to it's bio-suit, giving Paget the opportunity to gun down the Engineer for good.
The group all finally managed to return to the Hasdrubal using the freight bus, and they prepared to enter stasis for a twenty-three week return trip to Earth.