At 15, he spent his time filming himself in his bedroom playing video games, including FIFA, and uploading them to YouTube under the name KSI — which stands for Knowledge, Strength, Integrity.

started out in 2009 as a YouTuber who filmed himself playing FIFA. He had amassed over 1 million subscribers on the website by 2012 as he was on his way to forging his influencer empire. KSI went ...

KSI is a social media sensation and professional boxer who rose to fame posting videos on Youtube in 2009. Through that, he gained an impressive following via gaming commentary videos about FIFA ...