Neanderthal

Mainly, he feels different from others because he is certain he carries an unusual amount of Neanderthal DNA. This accounts, he says, for his unusually large chest, shorter, slightly bowed legs, big head and a habit of leaning forward, bent over like a man older than he actually is. He keeps all of this secret, of course. Though he does believe that his Neanderthal DNA has given him a larger brain than  the more models and a greater capacity for compassion and sensitivity which accounts for how vulnerable he is to hurt feelings.