JJ Olatunji
Biography
Olajide Olayinka Williams “JJ” Olatunji, professionally known as KSI, is a British YouTuber, internet personality and rapper who has also pursued acting, with fifty‑three credited roles listed on The Movie Database. He was born on 19 June 1993 in Watford, England, and is male. Olatunji co‑founded the entertainment collective the Sidemen alongside six other British YouTubers, creating online videos and merchandise that reach an audience of more than fifty‑three million followers. He is also credited under alternative names including Olajide Olatunji, JJ, Olajide Olayinka Williams and O. His acting work is catalogued on TMDB, where he is identified primarily for acting.
Career overview
Olajide Olatinka Williams “JJ” Olatunji, professionally known as KSI, was born on 19 June 1993 in Watford, England, United Kingdom. Though primarily recognized as a British YouTuber, internet personality and rapper, he has also pursued acting work that is documented on The Movie Database. TMDB lists him with a gender of male and records a total of fifty‑three acting credits, indicating a substantial involvement in film and television projects alongside his online career.
In addition to his acting pursuits, Olatunji co‑founded the entertainment collective the Sidemen, a group of six other British YouTubers that produces online videos and merchandise for a combined audience exceeding fifty‑three million followers. His public profile includes the alternate names Olajide Olatunji, JJ, and Olajide Olayinka Williams O, reflecting the various monikers under which he is credited in media listings. The TMDB entry classifies him under “Known For” acting, summarizing his dual presence in both digital content creation and traditional screen roles.
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Frequent co-stars
Career timeline
Full filmography
- TFI Unplugged (2026) as Self
- Exit Strategy (2026) Executive Producer
- Road to Glory (2026) as Self
- Road to Glory (2026) Executive Producer
- Race to the Top: The Dagenham & Redbridge Story (2026) as Self
- Race to the Top: The Dagenham & Redbridge Story (2026) Executive Producer
- Oliver Tree - Celebration of Life (2026) as Self (footage)
- Paul American (2025) as Self
- Inside: USA (2025) as Self - Host
- Inside: USA (2025) Executive Producer
- Inside (2024) as Self - Host
- Inside (2024) Executive Producer
- The Sidemen Story (2024) as Self
- Misfits Boxing: Xtra Series (2023) as Self
- WrestleMania 39: Saturday (2023) as KSI (Ringside)
- KSI vs. FaZe Temperrr (2023) as Self
- The Naughty List (2023) as Candy Cane Capone
- Dare to Dream: The Luis Pineda Story (2023) as Self
- Sidemen: From the Sidelines (2023) as Self
- Sidemen: From the Sidelines (2023) Creator
- KSI vs. Tommy Fury (2023) as Self
- Untold: Jake Paul the Problem Child (2023) as Self (archive footage)
- KSI: In Real Life (2023) as Self
- INSIDE: Narrative of Our Journey (2023) as Archive Footage
- KSI & The Pauls: Primed for Success (2023) as Himself
- KSI vs. Joe Fournier (2023) as Self
- All or Nothing: Arsenal (2022) as Self
- Fine or F*cked (2022) as Himself
- Task the Sidemen (2022) as Himself
- KSI vs. Swarmz (2022) as Self
- Sidecast (2021)
- Sidecast (2021) Creator
- Sidemen - BTS (2021) Creator
- Ask the Sidemen (2021) as Himself
- The KSI Show (2021) as Self
- The KSI Show (2021) Songs
- The KSI Show (2021) Writer
- Sidemen Among Us (2020) as Himself
- Sidemen Among Us (2020) Creator
- Britain's Got Talent: Unseen (2020) as Self - Guest Judge
- Celebrity Gogglebox (2019) as Self
- KSI vs. Logan Paul 2 (2019) as Self
- The Great Celebrity Bake Off for Stand Up To Cancer (2018) as Self - Guest
- The Big Narstie Show (2018) as Self
- The Sidemen Show (2018) as Self
- KSI: Can't Lose (2018) as Self
- KSI: Can't Lose (2018) Executive Producer
- Joe Weller: Fighter (2018) as Himself
- KSI vs. Logan Paul (2018) as Self
- KSI vs. Logan Paul (2018) Director
- KSI vs. Weller Live at the Copper Box Arena (2018) as Himself (as KSI)
- KSI vs. Weller Live at the Copper Box Arena (2018) Director
- Baywatch (2017) Songs
- Sidemen (2016) as Himself
- Sidemen (2016) Creator
- Michael McIntyre's Big Show (2016) as Self
- Laid in America (2016) as Duncan
- eSports: The Celebrity Millionaires of Competitive Gaming (2015) as Himself
- Chicken Shop Date (2014) as Self - Guest
- The Men in Blazers Show (2014) as Self
- The Jonathan Ross Show (2011) as Self
- Britain's Got Talent (2007) as Self - Guest Judge
- Britain's Got Talent (2007) as Self - Judge
- Top Gear (2002) as Self
- Sidemen Among Us as KSI
- KSI vs. Dillon Danis as Self
- Hide & Seek at KSI's House