Death Metal songs with gore in it in general. Chances are, they are songs about how they are doing some of the mosthorrificstuff that mankind can come up with.
The lyrics in a typical Devourment song includes horrific rape. And if raping/killing you is all they'll do, then consider yourself lucky. And if you died being raped, they'll do other horrific stuff to your dead body.
The eponymous character of The Decemberists' "The Rake's Song" relates how he murders his three children after their mother died in childbirth because he wants a new life, including beating his son to death and burning the body for daring to fight back, and concludes by saying that he doesn't regret it at all.
The Beatles's song Maxwell's Silver Hammer about Maxwell Edison, a crazed kid that murders with said hammer a girl, his teacher, and the judge who took his case, in front of a full courtroom. And in the Quarrybastards's movie, Maxwell even gets a Karma Houdini!
The Frameshift album "An Absence of Empathy" was created to explore the nature of violence and features songs from various viewpoints. Nearly everyone is given some sympathy: the serial killer in "Just One More" is mentally ill and cannot stop himself, the impulse murderer in "I Killed You" was so remorseful that he killed himself afterward, the school shooter in "Outcast" was bullied his entire life. Even the possible rapist in "How Long Can I Resist?" is portrayed as simply longing for a connection with a woman and desperately wanting someone to stop him. The torturer in "This Is Gonna Hurt", however, is a Complete Monster who delights in the pain of his victim, going so far as to describe their screams as music.
We're gonna play a game that I enjoy/We won't stop 'till you tell the truth/No matter what, I won't believe/'cause I just like hurting you
The main character of Creature Feature's "Such Horrible Things" talks of all the things he's done while stating outright that he should be killed gruesomely for having done it all. The way he muses about one incident with sinister chuckle says he enjoyed every moment.
The scariest part is what he did when he was 14. At first he says that nothing happened, but then he remembers "that one time" and chuckles. Cue a series of screams and about 50 seconds without any narration.
Docket 1031373 in the case of the United States versus David Michael Draiman.
The defendant has been found guilty of the following crimes:
38 counts of murder; Forced entry; 24 counts of statutory rape; 13 counts of sodomy; 12 counts of aggravated assault; 10 counts of theft of private property; and one count of treason against the government of the United States of America.
Because of the violent and overall disturbing nature of these crimes, the defendant is hereby sentenced to death by electrocution
After this, the room darkens while Draiman can be heard sizzling. A moment later, they play Down with the Sickness. Also, the docket number is Draiman's birthday (March 13, 1973).
The doctors in the video probably count too. Horrible as Draiman may have been, assuming any of the intro was true, anyone who waterboards someone in a sink, cuts up a defenseless man with a chainsaw, or force-feeds someone human eyeballs and flesh is most certainly beyond any kind of redemption themselves.
Apparently, this was parodied in Red Band’s ‘final performance’. The story behind the performance was that Red was sentenced to death and his final request was a kick-ass final performance. The performance started with various ‘evidence’ from his ‘trial’, including the judge’s shock at the nature of Red’s acts, followed by Red’s therapist coming on stage and mentioning how Red had sexually harassed his own mother in utero, performed incest with strangers, and didn’t pay his therapist bills. (Red himself seems to show genuine affection to no-one, to the point where he encourages his friend Poncho to jump to his death already for no other reason than ‘I haven’t got all day, I got shit to do’, the only exceptions being Marina Maximillian Blumin, with whom he falls in love, and his own son.)
Though opinions differ, Murdoc of the Gorillaz definitely Crosses the Line Twice and then some. So far, his track record includes theft, insurance fraud, possible murder, Organ Theft, extortion, and many, many counts of assault. Most of these crimes were aimed at 2D, the only person who'd tolerate him as long as he did, and on top of all that, Murdoc's still a misanthropic, filthy, perverted alcoholic.
The main character in When You're Evil by Voltaire is the embodiment of evil.
Mr. Jim (the split personality of Quadrophenia's protagonist) from The Who's song 'Dr. Jimmy' might count. During the song, he sings about how he plans to drink a lot, steal whatever he wants, rape whomever he wants, fight whomever he wants, and "get" the guy who messed-up his jeans.
Robert from Foster The People's "Pumped Up Kicks" seems to be this.
The narrator of A Criminal Mind definitely qualifies. That song could almost be the ANTHEM for this trope...Gowan really brings the point home in the second part of the first verse:
The title character of Shinedown's "Bully". The lyric "Make another joke while they hang another rope" cements this. That's right, he's cracking jokes about people who hang themselves from his torture.