Agent Donald Brown (ドナルド・ブラウン Donarudo Buraun) a federal employee who handles cases involving immortals.
Appearance[edit | edit source]
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.