Anthony Joshua is set to fight the American YouTuber in an eight-bout match which will be streamed in real-time on the streaming platform.
Briton Joshua declared he will "dominate completely" Jake Paul and "break" the American as the combatants met personally to promote the upcoming heavyweight fight.
Ex two-time world boxing king Anthony Joshua meets YouTuber-turned-boxer Jake Paul - in what is, theoretically, a massive mismatch - at Miami's Kaseya Center on 19 December.
"I will damage his features and damage his physique. I aim to demonstrate my superiority," Joshua, 35 years old, stated.
"I plan to overwhelm him. That's the boxer's mindset.
"I will really want to cause him pain. That's what I want to do."
Despite these statements, a relaxed Joshua and internet personality Jake Paul - typically known for his dramatics - were respectful and maintained decorum with each other.
Jake Paul instead targeted former Joshua opponent Francis Ngannou and called him "a joke" after Ngannou rejected a match opportunity.
Anthony Joshua, at the same time, criticized UK opponent Tyson Fury - and declined a large bet 'The Gypsy King' states he will put on a victory for Paul.
"[Paul] is superior to Tyson Fury - he's present here," Joshua said.
"I give him credit for that."
Despite saying he intends to punish Paul, Anthony Joshua chose not to speak negatively about his rival's pugilistic talent.
"Jake is a serious fighter," he stated.
Paul - who originally gained popularity on the Disney Channel - has mainly fought mixed martial artists or declining opponents since becoming pro.
He lost to British fighter Tommy Fury in last year.
However, the relative newcomer is still one of boxing's largest financial successes, consistently making substantial earnings.
The 28-year-old predicted a stoppage in round four or five and claimed he would stop the highly-expected match between Joshua and Fury, which is allegedly under discussion for 2026.
"It's going to be myself against Tyson Fury in the coming year," Jake Paul said.
As both boxers participated in the usual stare-down, with their physical disparity evident, it drove home just how surprising this complete situation is - and how astonishing it is that the match is truly going ahead.
Lena Visser is techjournalist met focus op startups en digitale transformatie in Eindhoven.