Ellner was a member of the United States Colonial Marine Corps. He was part of a search and rescue mission sent to LV-426 aboard the USS Sephora in 2179 to investigate the disappearance of the USS Sulaco and its crew 17 weeks earlier. He was M.I.A. on LV-426.


Ellner was one of the Marines who survived the destruction of the Sephora and Sulaco, making it safely to LV-426. During the 118th Battalion's assault against the Weyland-Yutani PMCs, Ellner, along with Maitland and Kobus, helped Corporal Hicks, Corporal Winter and Private O'Neal in eliminating some PMCs guarding the entrance to the Origin Facility.

His squad then patrolled the area outside the entrance while the other Marines headed inside. Ellner and his squad were M.I.A. soon after.


Ellner was outfitted with standard-issue M3 Pattern Personal Armor for protection; his armor was fitted with a TNR Shoulder Lamp attachment for illumination. He also had an M10 Pattern Ballistic Helmet, which he had painted an Ace of Spades symbol onto. He had customized his armor vest with a cartoonish dead Xenomorph on the chest plate with the words "PEST CONTROL" beneath it. He kept a Combat Knife strapped to the right side of his chest armor and some shotgun shells on the left. Ellner carried an M41A Pulse Rifle MK2 and an M4A3 Service Pistol.

Behind the Scenes

Ellner is named after Gareth Ellner of the United Kingdom Colonial Marines, an Alien-themed costuming group that assisted SEGA with the promotion of Aliens: Colonial Marines at events in the United Kingdom.


  • Ellner's armor uses the "xenocide" multiplayer decal, as the 118th Battalion had no clue what the Xenomorphs were prior to deployment, Ellner must have customized his armor after arriving on LV-426.
  • Ellner appears to reuse the Keyes' head model.


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