KSI

Olajide Olayinka Williams "JJ" Olatunji, known professionally as KSI, is an English social media influencer, professional boxer, and musician. He is the CEO of Misfits Boxing and the co-owner of Prime Hydration, XIX Vodka, Sidemen Clothing, restaurant chain Sides and cereal brand Best Breakfasts. He registered his main YouTube channel in 2009 and has since built a following posting gaming commentary videos of the FIFA video game series.