Donato from Gian-Carlo Menotti's opera, Maria Golovin. He's a young man, blind from war, living with his mother and building birdcages. He's very lonely and he falls in love with a woman who lodges with them. Then he becomes fearful and jealous and has outbursts of anger, culminating in him grabbing a gun with the intent of shooting her.
Eminem's stage persona definitely comes off as one of these, and the man himself has not had an easy life. Sure, he threatens to kill his wife repeatedly, but there's no doubt that his life has sucked.
Pink from The Wall beats his wife and essentially becomes a Nazi-wannabe, but songs like "Bring the Boys Back Home" and "Hey You" remind us that there is a decent, redeemable person underneath all of that.