The British boxer is set to fight the American YouTuber in an eight round match which will be shown in real-time on Netflix.
Briton Joshua said he will "dominate completely" the American and "defeat" the American as the pair came face-to-face to publicize next month's bout.
Former two-time unified title holder Anthony Joshua battles social media star turned fighter Jake Paul - in what is, by the numbers, a huge mismatch - at Miami's venue on 19 December.
Boxer's Mentality
"I'm going to break his face and damage his physique. My goal is to show my superiority," Joshua, 35 years old, said.
"I'll stamp all over him. That's the boxer's mindset.
"I will really want to injure him. That's what I want to do."
Civil Exchange
Despite such comments, a composed Anthony Joshua and social media star Jake Paul - normally known for his theatrics - exchanged pleasantries and kept it respectful with each other.
Paul rather attacked former Joshua rival Francis Ngannou and labeled him "a joke" after the Cameroonian declined a fight offer.
Targeting Fury
Anthony Joshua, in the meantime, criticized UK rival Tyson Fury - and rejected a £1m bet 'The Gypsy King' claims he will make on a victory for Paul.
"Jake Paul is better than Tyson Fury - he's actually sitting here," the boxer commented.
"I acknowledge that."
Serious Opponent
In spite of stating he plans to punish Paul, Anthony Joshua chose not to speak negatively about his rival's pugilistic talent.
"Jake Paul is a serious fighter," he stated.
Paul's History
Paul - who originally gained popularity on the Disney Channel - has mostly boxed mixed martial artists or faded names since entering professional boxing.
He lost to British fighter Tommy Fury in last year.
Commercial Attraction
Still, the inexperienced fighter continues to be one of boxing's largest money-making draws, consistently making substantial paydays.
Forecast and Confidence
The 28 year old predicted a knockout win in round four or five and asserted he would stop the much-anticipated match between Joshua and Fury, which is reportedly being planned for 2026.
"It will be my match with Fury next year," Paul declared.
Physical Disparity
As Joshua and Paul engaged in the usual face-off, with their physical disparity on show, it highlighted just how surprising this whole event is - and how amazing it is that the bout is truly happening.