His facial hair screams "Orlais" while his lack of a mask suggests otherwise... yes, Dramatic Hands is a fascinating creature.
The picture I posted before (which looks *incredibly* like DHMG) was of a 19th-century French dandy, Robert de Montesquiou, so you may be right, but I don't think either his or DHMG's art styles are quite as outrageous as Vivienne's. Orlais doesn't necessarily have a monopoly on crazy facial hair 
It might be a convoluted theory, but *if* DHMG is Dorian, I get the sense they might be going for some kind of late-Victorian aristocrat vibe for the character. His name is most likely a reference to the Oscar Wilde novel, and Dorian Gray is now a byword for hedonism, vanity and wit. His last name in the survey is Latin/Tevinter for 'peacock', which does suit the flashy archetype of dandies in the late 1800s. If DHMG/Dorian is a magister that fits the aristocratic part, and we've seen other Tevinter characters like Maevaris who enjoy using wit against their friends and enemies. David said some of the writers imagined DHMG saying "That. is. mahogany!!" in the War Room scene as the Inquisitor stabs the table, which kinda suggests someone who appreciates the finer things in life. Or someone who notices the destruction of something rare/beautiful/valuable like that desk, and not why the Inquisitor was stabbing it.
(One of Wilde's last poems, too, contains a line about outcasts that is actually on his gravestone - and Dorian is an outcast, in the literal sense, from Tevinter.)
The French dandy in that painting was supposedly an inspiration for some of Proust's writing and possibly adapted as the main character in the novel À rebours, which charted the life of a decadent aesthete who retreats from the world in disgust as its flaws. The novel was subtly referenced in Wilde's story of Dorian Gray as the inspiration for his hedonistic lifestyle, which indirectly ties the man in this painting to Wilde's Dorian.
In fact, the picture is *so* much like the character concept in the War Room art (even with the colour scheme and the collar on DHMG's shirt) that I wonder if they didn't actually use this as inspiration.
