KSI has sensationally claimed that a clash between him and Jake Paul is bigger worldwide than Anthony Joshua vs Tyson Fury . Over the years, KSI - real name Olajide Olatunji - made a name for himself in the world of YouTube. That said, he is now making big strides in influencer boxing and is one of the biggest stars in Misfits. The 31-year-old made his professional boxing debut back in 2019, defeating Logan Paul. Since then, he has gone on to defeat Swarmz, Luis Alcaraz Pineda and FaZe Temperrr.