Olajide “JJ” Olatunji, born 19 June 1993 in Watford, Hertfordshire, England, also known as KSIOlajideBT or simply KSI, is a YouTube and Internet celebrity, comedian, musician and video game commentator. He has a younger brother named Deji who creates and produces similar content on YouTube.
KSI is known for his crude, and often sexual, humor. He is also a member of the Ultimate Sidemen gaming YouTuber group, which he formed on 19 October 2013 along with YouTubers Vikram Barn, Josh Bradley, Tobi Brown, Simon Minter, and Ethan Payne; they were later joined by Harold “Harry” Lewis in 2014.
His YouTube name “KSIOlajideBT” comes from a gaming community he was in (KSI), his given name Olajide, and BT. He is known to refer to his fans/subscribers as the ‘KSI Army’. His main channel is the second-most popular in the UK and the fourteenth-most popular worldwide.
He is known to refer to his fans/subscribers as the ‘KSI Army’.
What made KSI more popular was his involvement in music. Furthermore, the music did very well in other countries chart. KSI joined amateur boxing and he is the current belt holder.