Konrad Henlein
In-game
Henlein will appear as one of the many leaders of breakaway states in Germany after Reinhard Heydrich's betrayal of Himmler becomes known. He takes control of the state, and has restarted the Lebensborn program, which involves German and Czech women being either abducted or forced to join at gunpoint, and having them impregnated for the sake of raising Aryan birth rates. Even Heydrich, who is otherwise shown to be rather dedicated to the ideals of National Socialism, will find this reprehensible, and will force himself to tolerate Henlein's presence while Himmler is still standing.
Trivia
Henlein's portrait was also used for Adam Dressler, the leader of Germany in another Hearts of Iron 4 mod, Fuhrerreich, which shows what would have happened if Germany lost World War I from the perspective of someone in Kaiserreich. Unlike Adolf Hitler, Dressler advocates for German cultural supremacy. While Henlein does actually exist in the world of Fuhrerreich, he uses the portrait of Anton Drexler, a figure who was notable for serving as Hitler's mentor.