- Assault Trooper - Standard Cerberus units in Mass Effect 3 and Mass Effect: Infiltrator.
- Batarian Shock Trooper - Batarian units in Mass Effect with Vanguard-like abilities.
- Batarian Trooper - Standard batarian units in Mass Effect and Mass Effect 2.
- Blood Pack Trooper - Vorcha units affiliated with the Blood Pack merc group in Mass Effect 2.
- Blue Suns Trooper - Standard units affiliated with the Blue Suns merc group in Mass Effect 2.
- Collector Trooper - Standard Collector units in Mass Effect 3 Multiplayer.
- Eclipse Trooper - Standard units affiliated with the Eclipse merc group in Mass Effect 2.
- Geth Rocket Trooper - Geth units equipped with rocket launchers in the Mass Effect series.
- Geth Shock Trooper - Heavy geth infantry units in Mass Effect that can deploy Geth Barriers.
- Geth Trooper - Standard geth units in the Mass Effect series.
- Merc Trooper - A standard soldier working for a mysterious group in Mass Effect 3: Citadel.
- Possessed Trooper - An enhanced variant of Collector Troopers in Mass Effect 3 Multiplayer.
- Riot Trooper - Advanced Cerberus unit equipped with a large riot shield in Mass Effect: Infiltrator.
- Trooper (Infiltrator) - A basic Cerberus unit in Mass Effect: Infiltrator.
- Turian Trooper - A basic turian unit in Mass Effect: Infiltrator.