Michael Koenig

 is an inmate at Nova Prospekt, and could be the key to finding Agent Alabama for Valery Abelev. He's been detained for several years now, at Nova Propekt. However, is just a piece of the puzzle to find Agent Alabama. Michael Koenig eventually leads a riot at Nova Propekt during the raid by Gordon Freeman. He initially survived the destruction of Nova Prospekt, but was later found and executed by a few remaining Nova Prospekt guards. However, before he is caught and murdered, he gives another cassette to Valery Abelev.