KSI

Olajide Olayinka Williams "JJ" Olatunji, known professionally as KSI, is an English social media influencer, professional boxer, and musician. He is a co-founding member of YouTube group the Sidemen, the CEO of Misfits Boxing, and the co-owner of Prime Hydration, XIX Vodka, Sidemen Clothing, restaurant chain Sides and cereal brand Best Breakfasts.