The British boxer is set to fight Jake Paul in an eight-round match which will be streamed live on the streaming platform.
Briton Joshua said he will "stamp all over" the American and "break" his opponent as the pair came face-to-face to build hype for next month's heavyweight fight.
Former twice world boxing king Joshua battles social media star turned fighter Paul - in what is, theoretically, a huge disparity - at Miami's venue on 19 December.
Fighter's Mindset
"I'm going to break his face and hurt his body. I aim to demonstrate I'm the better fighter," Joshua, 35 years old, said.
"I plan to overwhelm him. That's how fighters think.
"I intend to really want to hurt him. That's what I want to do."
Respectful Interaction
Despite these statements, a calm Anthony Joshua and internet personality Paul - normally famous for his showmanship - were respectful and kept it respectful with each other.
Jake Paul instead attacked ex Joshua's rival the Cameroonian fighter and described him as "a joke" after the Cameroonian rejected a bout proposal.
Taking Aim at Fury
Joshua, in the meantime, criticized British opponent Fury - and declined a large bet 'The Gypsy King' claims he will make on a Paul victory.
"[Paul] is better than Fury - he's present here," Joshua stated.
"I acknowledge that."
Legitimate Fighter
Despite stating he plans to damage his opponent, Anthony Joshua chose not to speak negatively about his opponent's boxing ability.
"Jake is a credible opponent," he stated.
Jake Paul's History
Jake Paul - who first rose to fame on the Disney Channel - has primarily boxed MMA fighters or faded names since entering professional boxing.
He was defeated by British fighter Tommy Fury in 2023.
Financial Success
However, the relative newcomer continues to be one of boxing's largest money-making draws, regularly earning substantial earnings.
Forecast and Belief
The 28 year old predicted a KO victory in rounds four or five and claimed he would stop the highly-expected Fury-Joshua bout, which is apparently in the works for 2026.
"It will be myself against Tyson Fury in the coming year," Jake Paul declared.
Physical Disparity
As the two fighters engaged in the usual stare-down, with their height and weight contrast clearly visible, it emphasized just how improbable this whole event is - and how remarkable it is that the match is really going ahead.
