KSI

Biography

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, producing online videos and merchanise to a combined audience of over 53 million followers.

Known For

KSI vs. Joe Fournier
KSI vs. Joe Fournier
KSI vs. Tommy Fury
KSI vs. Tommy Fury
KSI vs. Swarmz
KSI vs. Swarmz
KSI: In Real Life
KSI: In Real Life
The Sidemen Story
The Sidemen Story

Filmography

2025 Paul American
as Self
2024 Inside
as Self - Host
2024 The Sidemen Story
as Self
2023 KSI vs. Tommy Fury
as Self
2023 Sidemen: From the Sidelines
as Self
2023 Untold: Jake Paul the Problem Child
as Self (archive footage)
2023 KSI vs. Joe Fournier
as Self
2023 INSIDE: Narrative of Our Journey
as Archive Footage
2023 WrestleMania 39: Saturday
as KSI (Ringside)
2023 Dare to Dream: The Luis Pineda Story
as Self
2023 KSI: In Real Life
as Self
2023 KSI vs. FaZe Temperrr
as Self
2023 KSI & The Pauls: Primed for Success
as Himself
2022 KSI vs. Swarmz
as Self
2022 All or Nothing: Arsenal
as Self
2022 Task the Sidemen
as Himself
2022 Fine or F*cked
as Himself
2021 Ask the Sidemen
as Himself
2021 Sidecast
as
2021 The KSI Show
as KSI