Kevin Washington was a member of Raiden's support team within Maverick Security Consulting, Inc. Because of his doing a lot of work for Maverick, he was nicknamed "Kev-of-all-Trades." He treats Raiden like a younger brother, despite the fact that Raiden is older than Kevin.
Kevin originally worked for a DDR (Disarmament, Demobilization, Reintegration) with ties to the United Nations. He also went to the same university as Courtney Collins, and had her join Maverick as a recommendation.
He joined Maverick after speaking with Boris and also seeing how the UN pretty much doesn't do its job with DDR. His jobs in Maverick included briefing preparations, arms procurement, client negotiation, Human Resource management (HR), business development, accounting, and, during the events of Abkhazia, sales, on-site coordination, and advisor work. Unlike a number of the members of Maverick, his work never really dealt ON the battlefield, he was strictly support and office work.