Spartan-093
From Halopedia, the Halo wiki
Summary
Grace-093 was a Spartan who survived the Fall of Reach but was killed during the First Strike mission onboard the Covenant station Unyielding Hierophant. Graces' midsection was blown apart by the weapons of the Brutes, specifically it was a Brute Shot, which is a high-velocity grenade launcher. Master Chief-117 activated the fail safes on Grace's Mjolnir Mark V armor and self destructed the armor's fusion pack. She took 3 Brutes and various Covenant soldiers in her "Funeral Pyre".