The Übermensch, which roughly translates to “ideal man,” is an idea that the philosopher Nietzsche proposed in his book
Thus Spoke Zarathustra. Using it to refer to Dad highlights how perfect Darius thinks Dad is—and in contrast, how poorly Darius thinks about himself. As he talks about the term “Aryan,” Darius also references Adolph Hitler’s use of the term, which has become associated with white supremacy. Feeling caught between the two meanings of Aryan highlights how uncomfortable Darius is with his identity at this point.