KSI

About KSI

Olajide Olayinka Williams Olatunji, known professionally as KSI, is a British YouTuber, rapper, boxer, and co-founder of Prime Hydration and XIX Vodka. He began his career in 2009 with gaming videos on YouTube and has since expanded into music, boxing, and business ventures. He is a co-founder of the British YouTube group and brand The Sidemen. As a musician, KSI has released multiple charting singles and albums in the UK.

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