Garrus brings the best of Ashley and Kaidan together and adds in a few twists of his own. He can use Overload to dispose of enemy shields and barriers, but Garrus also has Armor-Piercing Ammo and Concussive Shot to deal with armored foes. Lastly, Garrus can deploy Proximity Mines into the middle of large groups of enemies to damage them. If you want anyone by your side during the final battle, it's Archangel himself.