How does Spark depict the "hero" of the story, The Ballad of Peckham Rye?

Characteristically, Spark makes her hero an odd mix of the supernatural and the mundane: he may have the remnants of horns on his head, but he also cries when he is dumped by his girlfriend.

Like the hero of a Shakespearean tragedy, Dougal has a "fatal flaw," but it is only an
aversion to sickness (which, in the end, saves him from marriage). It is hard to pin down just who or what Dougal is in part because everyone seems to see him differently.