KSI

(31 years old)

Born: June 19th, 1993

Place of birth: Watford, Hertfordshire, England

Death: -

Olajide Olayinka Williams "JJ" Olatunji, known online as KSI, is a British YouTuber, internet personality and rapper known for his YouTube video content. Olatunji is a member and co-founder of the entertainment collective known as the Sidemen, alongside six other British YouTubers.

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