Non-Combatants are a class of Alien that presumably work on non-combat tasks, such as piloting, research, engineering or maintenance. They are typically found on UFOs that are performing Scouting, Base Resupply or other non-aggressive routine missions.

They are the weakest class of Alien encountered (considerably less competent than a Soldier or Guard), with the lowest stats and exclusively using plasma pistols; this makes Non-Combatants optimal for being captured alive as they are much easier to deal with. However it should be noted that only the Ceasan and the Sebillian have Non-Combatants in their ranks.

Non-Combatant's are most prominent onboard Light Scouts and Scouts, however at least a single non-combatant will always appear on board a UFO or inside a Alien Base.