Jake Paul has vowed to knock out AnEsonGib and then avenge his brother's defeat by KSI.
The social media star will make his professional boxing debut in Miami on January 30 against his fellow YouTuber.
The fight follows the elder Paul's defeat by KSI in Los Angeles last November in their controversial rematch, Paul was deducted two points for punching his rival while he was on the canvas and paid the price at the hands of the judges.
And his younger sibling, who will be trained by former three-weight world champion Shane Mosley, is determined to restore the family name.
He said: "Gib is a doormat to me, he's merely something I'm wiping my shoes on on the path to avenging my brother.
"My brother lost because of a two point deduction, it was a controversial win but KSI won so all respect to him.
"But I'm a different fighter, I have a different mentality and after I beat Gib, KSI is going to get the smoke.
"KSI has already said he's down so that's where this is going so I'm going to be back here in a couple of months after this fool gets knocked out and KSI is going to be sitting across from me.
Gib, who is being trained by KSI's trainer Viddal Riley, has, like his opponent, a 2-0 white collar record.
And he vowed to inflict more misery on the Paul family.
"I called this man out, I'm not sure he knew who I was but here we are," he said. "It's a fight I wanted; he didn't want this fight, I forced this fight upon him and I've done the training.
"I'm more conditioned than he is; he's a coward and he has no heart."
