Der Executioner was an executioner in the German army that operated in France.
In 1943, Der Executioner prepared himself for the execution of French underground member LaFarge, until he was visited by the Young Allies and knocked out by them. Sprinting to the concentration camp, and seeing that the Young Allies disguised themselves as executioners in order to save LaFarge, he swore his revenge on the Young Allies.
Capturing some of them, he ordered his men to bring them to his home, instead to the concentration camp to test his new devices. Ironically the Executioner found his end, after Bucky, who was freed by Toro and Tubby with the rest of his fellow members, smashed him to the guillotine letting the blade fall and getting beheaded in the aftermath.