KSI Short biography
KSI, born Olajide Olayinka Williams Olatunji on June 19, 1993, is a British YouTuber, rapper, comedian, and actor. He is one of the most popular and highest-paid internet personalities in the world, with a net worth of US$100 million as of July 2025.
KSI began his career on YouTube in 2008, posting videos of himself playing the video game FIFA. He quickly gained a following for his energetic and entertaining personality. In 2013, he joined the YouTube group Sidemen, which further boosted his popularity.
In addition to his YouTube career, KSI has also released two studio albums, several singles, and has toured extensively. He has also fought in several high-profile boxing matches, winning all of his fights.
KSI is known for his outgoing personality and his willingness to try new things. He is also a vocal advocate for mental health awareness and has spoken openly about his own struggles with depression and anxiety.
