Despite my general loathing for DC Comics, I find one power relationship in the whole of their canon interesting (even if one of the characters is as one-dimensional as they come)-
Superman, and Lex Luthor.
Think about what it means to be Lex Luthor; he has chosen (and let’s face it, he picks this fight) to contend with a being that cannot really be defeated on a regular axis of struggle. In a stand-up fight, Superman simply cannot lose. But Lex picks that fight anyway, because that’s the kind of world he lives in, and those are the kinds of fights he needs to pick. In a sense, he’s a courageous fellow.