The British boxer prepares to battle the American YouTuber in an eight-bout contest which will be shown live on Netflix.
Briton Joshua said he will "stamp all over" Jake Paul and "break" his opponent as the combatants confronted each other to build hype for next month's bout.
Ex two-time world boxing king Joshua faces social media star turned fighter Paul - in what is, theoretically, a mammoth disparity - at Miami's venue on 19 December.
"I'm going to break his face and break his body up. My goal is to show I'm the better fighter," Joshua, 35, said.
"I'll stamp all over him. That's the boxer's mindset.
"I'm going to seriously aim to cause him pain. That's my intention."
In spite of such comments, a composed Joshua and social media star Jake Paul - normally famous for his theatrics - exchanged pleasantries and maintained decorum with each other.
Jake Paul instead attacked ex Joshua's opponent Francis Ngannou and described him as "ridiculous" after the Cameroonian turned down a fight offer.
Anthony Joshua, at the same time, targeted British opponent Fury - and declined a large bet 'The Gypsy King' states he will put on a Paul win.
"Jake Paul is better than Tyson Fury - he's present here," Joshua said.
"I respect him for that."
In spite of stating he plans to hurt Jake Paul, Anthony Joshua chose not to talk badly about his opponent's pugilistic talent.
"Jake Paul is a serious fighter," he said.
Jake Paul - who first rose to fame on the television network - has mostly boxed MMA fighters or past-their-prime fighters since entering professional boxing.
He lost to Briton Fury in last year.
Nevertheless, the relative newcomer remains one of boxing's largest money-making draws, frequently receiving massive financial rewards.
The 28 year old predicted a stoppage in round four or five and asserted he would prevent the highly-expected match between Joshua and Fury, which is apparently being planned for 2026.
"It's going to be me versus Tyson Fury in the coming year," Paul stated.
As the two fighters met for the traditional confrontation, with their height and weight contrast evident, it drove home just how unlikely this whole event is - and how amazing it is that the match is really happening.
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