Donald Brown

Agent Donald Brown (ドナルド・ブラウン Donarudo Buraun) a federal employee who handles cases involving immortals.

He and his colleague Bill Sullivan recruit Assistant Police Inspector Edward Noah into their ranks following Edward's assistance on an immortals-related case in November 1930.

Appearance
Donald is stocky and "powerfully built," in contrast to Sullivan's thin frame. In the 2015 manga and novels he is taller than Sullivan and has short blond hair, but in the anime is shorter. with short brunet hair and a square face.