Well, it's a bit of a surprise to me too, but I did produce a few sketches immediately after reading DH, and since I'm very much on a Photoshop learning curve at the moment, I thought that working up one of them for practice purposes would be a pleasant but educational diversion.
So here, in suitably psychedelic style, is Luna's slightly peculiar father.
(Amusingly enough, his name makes me think of Lenny Henry's crotch-thrusting soul singer character, Theophilus P. Wildebeeste. It's rather a shame that nature didn't bless old Xeno with a bit more sex appeal, or else a career as Lovegood the Lovegod would surely have beckoned. Mind you, the Nargles and Gernumblies might have been a bit disappointed...)