Peter Högl

Peter Högl (19.8.1987 - 2.5.1945) was an SS officer who served as the deputy chief of Hitler's personal bodyguards unit. At April 1945, Högl had commanded the detail which arrested Hermann Fegelein in his residence at Bleibtreustraße 11, Berlin. He died from a head wound, apparently after committing suicide.

Der Untergang
Although it is shown in the film, Högl probably didn't shoot Fegelein personally. But who cares? As far as the parody-makers are concerned, he's the Dude-Who-Kills-Fegelein.