The British boxer will face the American YouTuber in an eight-round contest which will be streamed in real-time on the streaming platform.
Briton Joshua declared he will "stamp all over" the American and "defeat" his opponent as the pair met personally to build hype for the upcoming bout.
Ex twice unified title holder Joshua faces YouTuber-turned-boxer Paul - in what is, by the numbers, a mammoth disparity - at Miami venue on 19 December.
Fighter's Mindset
"I will break his face and break his body up. My goal is to show I'm superior," Joshua, 35 years old, declared.
"I will dominate him completely. That's how fighters think.
"I will genuinely try to cause him pain. That's what I want to do."
Civil Interaction
In spite of those words, a calm Joshua and social media star Paul - typically recognized for his theatrics - were respectful and kept it respectful with each other.
Paul instead attacked former Joshua's rival Francis Ngannou and labeled him "not serious" after Ngannou declined a match opportunity.
Targeting Fury
Joshua, at the same time, took aim at UK opponent Fury - and declined a £1m bet 'The Gypsy King' claims he will make on a Paul win.
"Jake Paul is superior to Fury - he's actually sitting here," Joshua said.
"I acknowledge that."
Serious Fighter
Despite declaring he will punish Paul, Joshua chose not to talk badly about his rival's pugilistic talent.
"Jake is a serious fighter," he said.
Jake Paul's Background
Paul - who originally gained popularity on the television network - has mostly boxed MMA fighters or faded names since entering professional boxing.
He was defeated by Briton Tommy Fury in last year.
Commercial Attraction
Still, the novice remains one of the sport's largest commercial attractions, consistently making substantial earnings.
Prediction and Confidence
The 28 year old predicted a KO victory in the fourth or fifth round and stated he would stop the highly-expected Joshua–Fury fight, which is allegedly under discussion for 2026.
"It will be myself against Tyson Fury next year," Paul stated.
Size Disparity
As Joshua and Paul participated in the usual confrontation, with their height and weight contrast evident, it highlighted just how unlikely this complete situation is - and how amazing it is that the match is really going ahead.