Tony Bellew refused to be intimidated by Adonis Stevenson at the pre-fight press conference ahead of Saturday's world title clash.
The Liverpudlian will challenge Stevenson for this WBC light-heavyweight title in Quebec City on Saturday night, live on Sky Sports.
Stevenson has a reputation as a destructive puncher and he took the title with a first-round knockout of Chad Dawson in June.
But the fighter, nicknamed 'Superman', has also been halted himself by the little known Darnell Boone and Bellew was quick to point this out to his rival.
"He's been knocked out off a guy who has lost 20 fights. Not one, twenty fights. He's been knocked out off a journeyman," he said.
"It's been 12 weeks of long hard work and I've been thinking about him, morning, noon and night for 12 weeks. He's the first thing I think about when I wake up and he's the last thing I think about when I go to bed.
"I've got respect for what he does, I respect his punch power, but come Saturday night there's only going to be one winner."
Stevenson moved up from the super-middleweight division and Bellew will have height and reach advantages when they step into the ring.
The pair swapped heated words as they posed for pictures, with Bellew predicting the end of Stevenson's short reign this weekend.
"He's got to understand that I'm not coming here to lose," Bellew told the Liverpool Echo.
"People have no idea what is at stake and how far I'm willing to go. He can't beat me.
"I was getting to him towards the end of the press conference and he realises that I'm not moving.
"I'm 6'3" and he is so small he looks like he's fallen off my key ring. He is not getting to me. I'm cool, calm and I can't wait for Saturday."