Guard's make up the lowest ranked members of the Alien's military structure, they typically have the lowest of all stats aside from the Non-Combatant. Nonetheless they still represent a credible threat to Xenonanuts personnel.

They are typically seen on lower level UFO's and alien missions acting as a guard detail for low level missions. They are not meant to act as front line troops however and are eventually phased out and replaced with the Soldier .