Olajide Olayinka Williams "JJ" Olatunji, known professionally as KSI, is a British influencer, musician, and former professional boxer. He is a co-founder and former member of YouTube group the Sidemen, the co-founder of Misfits Boxing and co-owner of several businesses, including Prime Hydration and Lunchly. KSI has also served as a judge on Britain's Got Talent since 2025.
- Occupation
- YouTuber, boxer
- Citizenship
- United Kingdom
- Born
- December 9, 1996
- Website
- https://shop.comedyshortsgamer.com/
