Here he is again, slightly rotated. Note his preference for crows over more your more traditional vampire bat familiars. Perhaps he's a fan of the Song of Ice and Fire series of novels That, or they actually are bats, warped out of shape by frantic motion blur. He is angry because his wings don't work, and has decided to take it out on humanity by embarking on a mission to blot out the sun and turn Tamriel into a living hell. No, he can't "just get over it," unfortunately, he's a being of pure evil.