KSI was compared to Deontay wilder after he scored two knockout victories in one night during his return to boxing.
29-year-old YouTuber had not fought since November 2019, when he defeated Logan Paul in his first professional fight.
KSI thinks he has the power of Deontay Wilder, after he landed two knock-outs in a single night
Wilder has defeated 41 opponents and holds one of the most impressive punches in boxing's history
He showed no signs of ring rust, as he quickly defeated rapper Swarmz and knocked out professional boxer Luis Alcaraz Pineda.
KSI beat both his opponents in three rounds. Pineda was dropped several times.
After defeating the Mexican KSI, he said, "These guys think that they can mess me up, but once it feels like power, it's dangerous bro.
"I feel like Deontay wilder on these streets, man." It's terrifying, and no one wants it.
Wilder, 36 years old, is considered to be the greatest boxer in boxing history.
In his professional career, the American has defeated 41 opponents and was only seconds away from defeating Tyson Fury in their first encounter.
But KSI believes he has the same power, and he is determined prove it again - calling out Tommy Fury as well as several others at O2 Arena on Saturday.
He said, "Slim [Albaher] is good. I want a piece. Austin vs Gib. I want to be the winner. Andrew Tate, I want my piece of that. Tommy Fury, I would like a piece of this.
Jake Paul, a fellow YouTuber, holds a 5-0 record in this ring.
Paul and KSI had a verbal spat over Twitter, after Paul criticised KSI's fight against "a nice young Mexican man" in Pineda.
He claimed that the three-round fight was an exhibit and not a professional bout before claiming that KSI would never face him.
Paul was very active on social media throughout this event. When KSI did not challenge him to a fight, he tweeted: "Smart Man KSI isn't calling me out. He knows the truth.