The British boxer will face Jake Paul in an eight-bout contest which will be shown in real-time on the streaming platform.
Briton Joshua said he will "dominate completely" the American and "break" his opponent as the pair came face-to-face to promote the upcoming boxing match.
Ex two-time world title holder Joshua battles social media star turned fighter Jake Paul - in what is, on paper, a mammoth uneven pairing - at Miami's arena on 19 December.
Boxer's Mentality
"I will damage his features and hurt his body. My goal is to show I'm superior," the British boxer, 35, stated.
"I'll stamp all over him. That's the boxer's mindset.
"I will genuinely try to injure him. That's what I want to do."
Civil Exchange
Despite these statements, a composed Anthony Joshua and internet personality Paul - usually known for his showmanship - were respectful and kept it respectful with each other.
Paul rather attacked ex Joshua opponent Francis Ngannou and called him "a joke" after the Cameroonian declined a match opportunity.
Targeting Tyson Fury
Joshua, meanwhile, targeted UK opponent Fury - and declined a million-pound wager 'Tyson Fury' claims he will make on a victory for Paul.
"Jake Paul is better than Fury - he's actually sitting here," the boxer stated.
"I give him credit for that."
Legitimate Fighter
In spite of declaring he will hurt Jake Paul, Joshua declined to talk badly about his rival's fighting skills.
"Jake Paul is a credible opponent," he stated.
Jake Paul's History
Jake Paul - who initially became famous on the television network - has mainly boxed mixed martial artists or declining opponents since becoming pro.
He lost to British fighter Tommy Fury in last year.
Financial Attraction
Nevertheless, the relative newcomer continues to be one of boxing's biggest money-making draws, frequently receiving massive paydays.
Forecast and Confidence
The 28 year old anticipated a knockout win in rounds four or five and stated he would prevent the highly-expected match between Joshua and Fury, which is apparently being planned for 2026.
"It will be me versus Tyson Fury in the coming year," Paul stated.
Size Disparity
As both boxers participated in the customary face-off, with their size difference clearly visible, it highlighted just how improbable this whole event is - and how remarkable it is that the match is actually happening.