The British boxer is set to fight the American YouTuber in an eight-round contest which will be broadcast in real-time on Netflix.
Briton Joshua stated he will "dominate completely" Jake Paul and "break" the American as the two fighters came face-to-face to build hype for next month's bout.
Ex twice unified title holder Anthony Joshua faces YouTuber-turned-boxer Jake Paul - in what is, by the numbers, a mammoth uneven pairing - at Miami's venue on 19 December.
"I'm going to damage his features and damage his physique. My goal is to show I'm the better fighter," Joshua, 35, declared.
"I plan to overwhelm him. That's a fighter's mentality.
"I will genuinely try to cause him pain. That's my intention."
Despite these statements, a calm Joshua and social media star Paul - normally recognized for his theatrics - were respectful and maintained decorum with each other.
Paul rather criticized ex Joshua opponent Francis Ngannou and described him as "not serious" after the Cameroonian declined a match opportunity.
Joshua, meanwhile, took aim at UK opponent Tyson Fury - and declined a large bet 'The Gypsy King' states he will put on a Paul win.
"[Paul] outshines Fury - he showed up," the boxer commented.
"I give him credit for that."
In spite of stating he plans to hurt Jake Paul, Joshua chose not to talk badly about his rival's boxing ability.
"Jake Paul is a credible opponent," he said.
Jake Paul - who initially became famous on the Disney Channel - has mostly fought mixed martial artists or declining opponents since entering professional boxing.
He lost to British fighter Fury in last year.
However, the novice is still one of boxing's greatest money-making draws, consistently making substantial earnings.
The 28-year-old predicted a knockout win in rounds four or five and stated he would derail the long-awaited Fury-Joshua bout, which is allegedly in the works for 2026.
"It's going to be me versus Tyson Fury in the coming year," Jake Paul declared.
As Joshua and Paul met for the customary confrontation, with their height and weight contrast on show, it emphasized just how unlikely this complete situation is - and how astonishing it is that the bout is truly proceeding.
Elena Marchetti is a technology journalist with a passion for demystifying complex topics. She has been covering tech trends for over a decade.