Waldrum

From the Resistance Wiki

Waldrum was a Sentinel who participated in the Sentinels' first mission in Alaska along with Cpl. Joseph Capelli to retrieve an atomic bomb.

While fighting off heavy numbers of Chimeran forces, Waldrum and a couple of other Sentinels split up from Capelli, who at the time was fighting off hordes of Grims and several Titans by himself. During the fight, Waldrum was overwhelmed by the Chimera and took two direct hits from a Titan and was killed.