Anthony Joshua will face Jake Paul in an eight round fight which will be streamed in real-time on Netflix.
Briton Joshua stated he will "dominate completely" the American and "break" his opponent as the pair came face-to-face to build hype for the upcoming heavyweight fight.
Ex two-time world boxing king Joshua meets social media star turned fighter Paul - in what is, theoretically, a huge disparity - at Miami's venue on 19 December.
"I will break his face and damage his physique. I'm here to prove my superiority," Joshua, 35 years old, declared.
"I will dominate him completely. That's a fighter's mentality.
"I will really want to hurt him. That's my goal."
In spite of these statements, a composed Joshua and internet personality Paul - typically famous for his dramatics - were respectful and kept it respectful with each other.
Jake Paul instead targeted former Joshua's rival Francis Ngannou and called him "a joke" after the Cameroonian turned down a fight offer.
Joshua, in the meantime, took aim at British rival Fury - and refused a £1m bet 'Tyson Fury' says he will place on a Paul win.
"Jake Paul is superior to Fury - he showed up," Joshua stated.
"I give him credit for that."
Despite declaring he will punish Paul, Anthony Joshua chose not to talk badly about his rival's boxing ability.
"Jake is a serious fighter," he remarked.
Paul - who initially became famous on the Disney Channel - has mainly fought MMA fighters or past-their-prime fighters since becoming pro.
He was defeated by British fighter Tommy Fury in 2023.
Still, the relative newcomer is still one of the sport's largest commercial attractions, frequently receiving substantial earnings.
The 28 year old anticipated a stoppage in rounds four or five and stated he would derail the much-anticipated Fury-Joshua bout, which is apparently being planned for two years from now.
"It will be me versus Tyson Fury next year," Paul stated.
As the two fighters met for the traditional confrontation, with their size difference on show, it emphasized just how improbable this whole event is - and how astonishing it is that the bout is truly happening.