Klaus Adler

Reichsmarschall Klaus Adler is a New Wehrmacht general currently serving under Oberste Führer Wolfgang Kortzfleisch as his right hand man on the Eiserne Zitadelle (later the Lord Trethium's Wrath) after the Last Day. Although he initially had the rank of Obergruppenführer and served then-Führer Lothar Brandt back then. Adler secretly planned to usurp Brandt, then letting Kortzfleisch become the new leader of the New Nazi Order and earning the title of "Supreme Commander of the New Wehrmacht".

Klaus is a very ruthless and determined person who is willing to do anything to get Supreme Leader Victor Nevarez's goals realized, whether by killing a person or toying around with people's feelings. He has a sadistic nature and seemingly has qualities of a psychopath as he laughs maniacally after the Deathshead fired its axial superlaser.