Deontay Wilder has accused boxing heavyweight rival Anthony Joshua of buying his first world title.
Wilder also labelled the undefeated Brit, a unified world heavyweight champion, a ‘coward’.
The WBC world heavyweight champion defends his belt against Bermane Stiverne on November 4, but he has continued his verbal sparring with AJ.
Wilder, who has won all 38 of his fights, has once more stated his desire to unify the heavyweight division by fighting Joshua next year.
Between the two, they have 57 wins and no losses with 56 knockouts to their name.
Wilder, in an interview with fighthype.com, has sent a chilling warning to rest of the heavyweight division, including Joshua.
He claims he wants to hurt his opponents “to the point where you don’t even have a life to live.”
Wilder was asked if he was the initiator in the war of words with AJ, to which he replied with: “Most definitely. If you put me in the category of calling out and talking s***, then I'm the man to beat.
“I've called them all out. Of course I've called Joshua out, he knows what I want. They know what I want. (Eddie) Hearn knows what I want. The UK fans know what I want and I want him.
“He don't say he's the best, he don't even know if he's the best or not but he's a champion.
“They bought that first belt from Charles Martin for sure. He wasn't even ready to step up to the plate but now you've filled the spot, you can't be talking about not being ready. You can't say that.
“You're a champion, I'm a champion. The people say you the best, they speak for you. You're a coward, you can't speak for yourself. I speak for myself and I say I'm the best. So let's see who's the best.”
Wilder concluded: “They were already terrified of me and when I say 'they', I mean all the top guys in the heavyweight division.
“I'm not saying they're all scared of me, I know some of them want to fight me and really feel they can beat me but I do put fear in these fighters' hearts and they should have fear because I'm coming in to try and really hurt you to the point where you don't even have a life to live.
"I'm on some life, death threatening s***, try to take your life type s***. That's what I'm on when I get in that ring because the Bronze Bomber takes over. When I'm outside, I'm Deontay."
Should Wilder defeat Stiverne in their rematch, a possible fight with Joshua would take place in 2018.