My pick is Five Finger Death Punch and the obvious answer is Ivan Moody. The guy radiates that alpha-male wannabe energy and it definitely rings through all of the songs he has written and performed with this band. The guy is just a prick and a self-victimizing asshole.
I think he’s the primary reason FFDP is mocked so badly.
Oh, gross. I didn’t know about that. “Didn’t know her age” initially, then found out, then had sex again anyways, then wrote a song about it that the RHCP played for decades.
Any “separate the art from the artist” argument falls apart when the pedo artist’s art is about the crime.
See also Don’t Stand So Close to Me by The Police.