Jeff Easterling in front of an HCS banner.
Jeff Easterling, also known by his Twitter and Xbox Live handle GrimBrother One, is a writer at 343 Industries, responsible for the weekly lore-centric blog series Canon Fodder, which documents and expands upon many aspects of the Halo universe.[1] Before being hired at 343, Easterling was a dedicated member and admin on the HBO forums.[2]