The YouTuber started his career playing FIFA and is now also known for his music and Twitter beefs. But how much is he worth?
YouTube sensation KSI is one of the biggest names on the video platform and has successfully expanded his career into music, boxing and beyond.
KSI rocketed to fame as a FIFA player in 2009, posting videos of him playing the football game, as well as occasionally other popular video game titles such as Grand Theft Auto.
The influencer may now be recognised more for his amateur boxing fights against other YouTube personalities and for launching a music career, focusing mostly on 'diss' tracks.