
Olajide Olayinka Williams "JJ" Olatunji, 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. His main YouTube channel has over 19.2 million subscribers.
Contender: KSI — From FIFA Videos to $100M Empire
Ranked #2 on "Top 10 Influencers Who Out-Earned A-List Actors in 2025". Cast your vote to back or challenge this spot.
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