Tyson Fury has identified the danger that Deontay Wilder provides ahead of the pair's trilogy bout in Las Vegas this weekend.
A controversial draw in the first meeting was followed by Fury's emphatic victory in the rematch, inflicting the first defeat of the American's career.
That saw Fury clinch the WBC heavyweight title, which he now defends in the third and final meeting between the two rivals.
The Manchester fighter is widely regarded to be the favourite ahead of the latest bout but he has made it clear that Wilder poses a real threat.
"A lot of people are writing Wilder off in this fight. They almost look at him like he's a bum. Like he can't fight and he's useless. You can't write him off," he told the BBC.
"Make no mistake about this, Deontay Wilder is the most dangerous heavyweight out there. Combine them all together and they don't make a danger like Wilder.
"So that's what I'm messing with. I'm playing with an atomic bomb, messing round, clipping wires. Every time you go into the ring with Deontay Wilder you're playing with that danger.
"This is the third time now I've been in the ring with him and every single time he's been very dangerous. He's a very dangerous hombre with big, big power and he can close the distance quickly.
"With most boxers they need to hit you with five punches, with Wilder he can hit you with a quarter punch and knock you spark out."
Fury's fight against Wilder comes in the early hours of Sunday morning, with ring walks expected at around 4am.
