Skarr
From Mass Effect Wiki
Skarr was a krogan battlemaster and mercenary. A powerful biotic - strong enough to lift a four-ton vehicle - he was hired by Edan Had'dah and ordered to kill Kahlee Sanders, after the Blue Suns failed in their attempt. Skarr tracked Kahlee to Jon Grissom's home on Elysium, injured Grissom with his boot knife and almost killed David Anderson. But Skarr had been followed in turn by Saren Arterius, whose intervention drove him off.
Angry, Skarr returned to Had'dah, who negotiated a new deal and sent Skarr to destroy the Dah'tan Manufacturing Company on Camala, specifically to kill Had'dah's contact there, Jella. Without her, there would be nothing to link Had'dah to the events at Sidon. Skarr led the assault on Dah'tan Manufacturing but a twist of fate meant Jella barely escaped with her life and eventually gave Saren Had'dah's name. When Kahlee Sanders was being shipped off Camala, supposedly in secret, Skarr followed a tip-off planted by Saren and intercepted the APC Sanders was travelling in. When the SSV Iwo Jima arrived, Skarr used a mass accelerator cannon to bring the frigate down and captured Sanders.
Skarr stayed close to Sanders when she was brought to the element zero refinery Had'dah was using as a hideout, to ensure she didn't escape. He was badly injured when Anderson and Saren attacked the refinery but survived long enough to attack Anderson. After a tough battle Skarr was eventually killed with a point-blank shot to the head.
