Legion

The Geth are synthetic lifeforms created by quarians from VI programs. Fearing them, quarians attempted extermination, leading to the Morning War where Geth defended themselves, devastating quarians and driving them from Rannoch. Geth isolated for 300 years until some aided Saren and Sovereign against the Citadel. Most Geth did not ally with Reapers. After Shepard defeated heretic Geth and Sovereign, a platform with 1,183 programs, named Legion, was sent to investigate Shepard. Legion joined Shepard’s squad, aiding against heretics and Collectors, then returned to consensus before reappearing in the Reaper War to end the quarian-Geth conflict.

Weapons - Pistols

• Guns down multiple husks. (source) ([Squadmate] ME2)

Weapons - Pistols

• Quickly guns down a Krogan, who have hides impenetrable to all melee weapons short of molecular blades. (source) ([Squadmate] ME2)