Corporal C. Errera
From Halopedia, the Halo wiki
Summary
Sniper-spotter Marine during the battle of Reach. He intercepted a conversation between two Grunts, Mehemp being one. In this conversation the Grunts talked of the tension between the Elites and Brutes within the Covenant. They also spoke of a Brute named Bracktanus.
Corporal Errera is listed as deceased.