The God of the Old Testament is arguably the most unpleasant character in all of fiction: jealous and proud of it; a petty, unjust, unforgiving control-freak; a vindictive, bloodthirsty ethnic cleanser; a misogynistic, homophobic, racist, infanticidal, genocidal, filicidal, pestilential, megalomanical, sadomasochistic, capriciously malevolent bully. Those of us schooled from infancy in his ways can become desensitized to their horror.
(Richard Dawkins, The God Delusion (2008), p. 50)
I gotta get that book.
Quinn from the Night’s Dawn trilogy by Peter F Hamilton comes close… but yes, I think YHWH takes the cake.