If you purchase an independently reviewed product or service through a link on our website, Rolling Stone may receive an affiliate commission. Celebrity boxer KSI is re-entering the ring after a three ...

Before KSI, there was Olajide Olatunji – “JJ” for short. Before the YouTuber, gamer, rapper, boxer, promoter and energy drink magnate, there was the affable class clown in Berkhamsted, Hertfordshire. ...

Olajide "KSI" William Olatunji and Oladeji "Deji" Daniel Olatunji are brothers who have been making videos on YouTube for almost a decade. They've played FIFA, pranked each other and boxed the Paul ...

British YouTuber, rapper and boxer Olajide Olayinka Williams JJ Olatunji, known professionally as KSI, has apologized again after a racial slur. On Sunday, KSI appeared in a mockup of U.K. game show ...

UFC, OBJ and RBI are among the well-known abbreviations in sports today. KSI has stormed onto the scene as one of pop culture's biggest headline makers of the past few years. And he's elbowing his way ...