Not as much a hard-gainer as he has been depicted...more like an over-achiever(much like Gaspari). Not blessed with great shape ala Flex, but made up for it with granite-hardness, pushing the size game, and making HIT fashionable again, not many trained as hard as Dorian.
Also the only man to win the mr O with one arm, that says a lot for the rest of his physique...