Are we sure this is Namor? Looks more like Aquaman with his shirt off. Namor tends to have jet black hair that's slicked back and pointed vampire ears.
Although he apparently voted not to put Hulk on the spaceship that one time, which is why Hulk left him alone when he got back (and also Xavier who had just lived through House of M).
Well, kinda fit with Namor...like his entire persona is being an asshole.
Like first one to suggest morally dubious act, abrasive personality, and antagonistic attitude to his equals.