Nikki Sixx says nobody in rock has any respect for Kiss mainman Gene Simmons as he urged him to call it a day.
He also described Simmons as being 'overrated' and as someone who 'dresses like a clown' in a series of swipes this week.
Simmons has come under fire for labelling the death of Prince as ‘pathetic’ last week.
Taking to Twitter, Motley Crue founder Sixx pulled no punches as he wrote: “"recent heartless and uneducated remarks about Prince's death shows why he's not my hero anymore or anybody's."
Simmons had suggested that Prince’s passing was drug related prompting a backlash even from his own bandmates with Paul Stanley hitting out.
Sixx also blasted Simmons on his own nationally syndicated radio show 'Sixx Sense' saying: Nothing that Gene Simmons says resonates with me. When you're in Gene's position, you should have a little bit more than a narrow-minded, bullying sense of what's happening on the earth. And he said that if you're depressed, kill yourself. He is pro Trump, he is pro a lot of things that I think are negative."
"I think that Gene is an overrated, lucky guy that dresses like a clown. [He] wrote some good songs, but hasn't in a long time, and loves to brag about himself.
"I like my heroes to be humble. I like my heroes to have compassion. And I like my heroes to be open to change. I don't like my heroes to be egotistical assholes.
"Gene Simmons, you're no longer my hero."
Simmons was also blasted by the vocal Sixx during an interview with the WNOR FM99 radio station saying: “Gene Simmons taking swipes at Prince without actually having the information is what I said #FromHeroToZero. We have no respect for Gene Simmons anymore; nobody in rock does.
“And I'm not gonna sit back quietly as a person [and] allow a bully to go out there and put down people he doesn't know anything about. The last thing that me and Gene got into is he said that if people are depressed, they should kill themselves.”
He continues: "I think that Gene should call it a day, and that we should look at this beautiful catalogue of music that Prince has given us. And if you wanna compare Prince to Kiss, I mean… okay, c'mon. There's no comparison. Prince has been an amazing artist. He's kept his standard high over the years and was never just about money and ego; it was about music.”
Simmons has tried to clarify his remarks with a public apology which he expressed on his own Twitter writing: “I apologize — I have a long history of getting very angry at what drugs do to the families/friends of the addicts. I get angry at drug users because of my experience being around them coming up in the rock scene.”