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.
Wikipedia didn’t cover Russia in detail so I did some reading.
https://www.bbc.com/news/entertainment-arts-64580688
He calls Putin a gangster.
I think his opinions are naive. He identifies Western Propaganda but ignores the possibility that Putin is lying.
He seems to be consistently anti war though so I’m not going to burn my Pink Floyd collection … yet