Bios - Herr Kleiser Voiced by: James K. Ward First Appearance: Ultimate Avengers: The Movie Bio: A Chitauri agent disguised as a Nazi, Kleiser was a constant thorn in Captain America’s side throughout World War II. After Captain America stopped his war head, Kleiser vanished with his fellow Chitauri agents, to return at a later date to exact his revenge on Captain America. Back to Bios