The British boxer will face Jake Paul in an eight-round contest which will be shown in real-time on the streaming platform.
British boxer Joshua stated he will "stamp all over" the American and "break" his opponent as the two fighters met personally to promote the upcoming bout.
Former twice unified title holder Anthony Joshua faces social media star turned fighter Jake Paul - in what is, by the numbers, a mammoth uneven pairing - at Miami's arena on 19 December.
"I plan to injure his face and damage his physique. I'm here to prove my superiority," Joshua, 35, declared.
"I will dominate him completely. That's how fighters think.
"I intend to seriously aim to cause him pain. That's my goal."
Despite these statements, a composed Joshua and internet personality Paul - normally famous for his showmanship - exchanged pleasantries and kept it respectful with each other.
Jake Paul instead targeted former Joshua opponent the Cameroonian fighter and labeled him "not serious" after the Cameroonian declined a bout proposal.
Joshua, meanwhile, criticized British opponent Tyson Fury - and declined a million-pound wager 'Tyson Fury' claims he will make on a victory for Paul.
"Jake Paul outshines Fury - he's actually sitting here," Joshua said.
"I acknowledge that."
Despite saying he intends to hurt Jake Paul, Joshua declined to talk badly about his opponent's boxing ability.
"Jake Paul is a credible opponent," he said.
Paul - who initially became famous on the television network - has primarily fought MMA fighters or faded names since turning professional.
He lost to British fighter Fury in last year.
Still, the relative newcomer continues to be one of the sport's largest financial successes, regularly earning huge financial rewards.
The 28 year old predicted a knockout win in rounds four or five and stated he would derail the highly-expected Fury-Joshua bout, which is allegedly being planned for two years from now.
"It will be my match with Fury next year," Jake Paul stated.
As both boxers met for the customary stare-down, with their physical disparity evident, it highlighted just how surprising this entire matchup is - and how astonishing it is that the bout is really going ahead.
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