1945–1981
Biography · Music
KSI
1993–
United Kingdom
Loading image…Biography
Olajide Olayinka Williams "JJ" Olatunji ( born 19 June 1993), known professionally as KSI, is a British YouTuber, 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.
Sources & collection details
Wikipedia contributors — original record ↗
Biography text · CC BY-SA 4.0 · Source checked 2026-10-13
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1925–2003
1938–1997