Summary (tl;dr)

Popular British YouTuber and influencer KSI has announced his departure from the long-standing YouTube collective Sidemen, citing a need to prioritize his solo career and personal well-being.

Essential Background

Olajide Olatunji, known as KSI, is a prominent British influencer, musician, and former professional boxer who initially rose to fame through FIFA gaming videos on YouTube. He co-founded the Sidemen in 2013, a British YouTube collective that has since grown into a massive media empire with over 23 million subscribers. Beyond the Sidemen, KSI has successfully diversified his career into music, releasing chart-topping albums, engaging in high-profile professional boxing matches, co-founding the successful beverage brand Prime Hydration with Logan Paul, and serving as a judge on Britain's Got Talent since 2025.

The Full Story

On May 31, 2026, KSI posted an emotional video on his YouTube channel titled "I'm leaving the Sidemen," announcing that this date would mark his final appearance in the group's videos. He explained that his decision was not due to conflict with other members but was a personal choice driven by a desire to achieve a better work-life balance and dedicate more time to his health, family, and partner. KSI stated that his extensive professional commitments, including his individual content creation, music career, business ventures, and television appearances, had stretched him thin, making it difficult to fully commit to the Sidemen. His representatives confirmed the authenticity of the announcement amid initial fan speculation that it might be a prank. The remaining members of the Sidemen acknowledged KSI's decision, expressing their surprise but wishing him well in his future endeavors.

Why It Matters

KSI's departure marks a significant moment for one of YouTube's most influential collectives, as he has been a foundational member and a major driving force behind the Sidemen's success for over a decade. The news has sparked widespread discussion among fans, with some expressing sadness and others speculating about the true reasons behind his exit, including theories of a possible stunt or a connection to a lost bet. This move allows KSI to further concentrate on his rapidly expanding solo career and various business ventures, which include his Prime Hydration brand and his history in Misfits Boxing. It also highlights the growing pressures and evolving career paths of prominent digital creators as they navigate the complexities of managing multiple brands and personal well-being. The Sidemen group has indicated that they will continue to produce content and expand their brand, albeit without one of their most recognizable faces.

Geographic Location

• Virtual/Online (announcement of departure from Sidemen)
• London, England, United Kingdom (general base of operations for KSI's various ventures and the Sidemen collective)