KSI, whose real name is Olajide Olayinka Williams Olatunji, is a British YouTuber, musician, and professional boxer. He gained fame through gaming videos, particularly FIFA content, and later expanded into music, boxing, and business ventures.
Early Life & Rise to Fame
Born on June 19, 1993, in Watford, England, KSI started his YouTube journey in 2008, initially posting FIFA gameplay videos.
His entertaining personality and comedic approach helped him amass millions of subscribers. Over time, he transitioned to diverse content, including vlogs, reaction videos, and collaborations with fellow creators.
Also Read: Zach Randolph Net Worth 2025: Career & Earnings
YouTube & Sidemen
KSI is a founding member of the Sidemen, a popular British YouTube group known for gaming, challenges, and real-life content.
Their collaborations have played a crucial role in boosting his popularity and net worth. The Sidemen brand has expanded to include merchandise, events, and exclusive content.
Music Career
KSI transitioned into music and became a successful rapper and singer. He released multiple chart-topping singles and albums, collaborating with artists like Anne-Marie, Craig David, and Lil Wayne.
His debut album Dissimulation (2020) and follow-up All Over The Place (2021) were commercial successes, cementing his status in the music industry.
Boxing Career
KSI helped pioneer YouTube boxing, starting with his fight against fellow YouTuber Joe Weller in 2018. His fights against Logan Paul (2018 & 2019) drew massive global attention.
He later faced professional boxers like Tommy Fury and competed in crossover boxing events. His fights have generated millions in pay-per-view revenue.
Business Ventures & Investments
Beyond entertainment, KSI is a savvy businessman. He co-founded Prime Hydration with Logan Paul, which became a global sensation, securing partnerships with major retailers and sports organizations.
Also Read: Tina Fey Net Worth 2025: Career, Personal Life & Legacy
He has also invested in various companies, including XIX Vodka and Misfits Boxing, further expanding his wealth.
Net Worth & Influence
KSI’s estimated net worth exceeds $40 million, fueled by YouTube, music, boxing, endorsements, and business ventures.
He remains one of the most influential internet personalities, shaping digital entertainment and inspiring aspiring creators worldwide.
