Jack Krauser is, or was, an agent of Wesker's hired to obtain a sample of Las Plagas from Osmund Saddler during the events detailed in what was later known as the Kennedy Report. The mysterious soldier was a partner of Leon Scott Kennedy himself during a tour in South America titled Operation Javier. It was during this tour that the agent first learned of Bio-organic Weapons (BOWs) and the power they can grant before becoming permanently wounded. The damage lost him more than just the mobility of his left arm as it stripped him of his military position, limited his combat abilities and destroyed both his pride and purpose. Desperate, he sought out the only man he knew of who could grant him the power he once held and so much more. Albert Wesker. Now a BOW himself, his abilities have been restored and enhanced to unimaginable heights.
That's Jack Krauser.
I'm Agent Jaq Krauser, his female doppelganger. Like him in every way aside from a few anatomical deviations, I'm prepared to fight for what I see as the only possible future for this insane world of ours.