- Birth nameOlajide Olayinka Williams Olatunji
- Nicknames
- JJ
- Jide
- Olajide Olayinka Williams "JJ" Olatunji (born 19 June 1993 in Watford, Hertfordshire, England), also known as KSIOlajideBT or simply KSI, is a YouTube and Internet celebrity, comedian, musician and video game commentator. He has a younger brother named Deji who creates and produces similar content on YouTube. Olatunji is known for his crude, and often sexual, humor. He is also a member of the British YouTuber group, the Sidemen, which he formed on 19 October 2013 along with YouTubers Vikram Barn (Vikkstar123), Josh Bradley (Zerkaa), Tobi Brown (TBJZL), Simon Minter (Miniminter), and Ethan Payne (Behzinga); they were later joined by Harry Lewis (Wroetoshaw) in 2014.- IMDb mini biography by: Anonymous
- Parents
- RelativesDeji Olatunji(Sibling)
- His YouTube name "KSIOlajideBT" comes from a gaming community he was in (KSI), his given name Olajide, and BT [British Telecom].
- His main channel is the second-most popular in the UK and the fourteenth-most popular worldwide. He is known to refer to his fans/subscribers as the 'KSI Army'.
- As of 2020 he has over 20 million online subscribers with videos that have received more than 5 billion views.
- One of his YouTube videos alone can earn him an estimated £250K/$320K in advertising revenue.
- In his "Googling Myself" video, KSI revealed that he is agnostic (neither believing in nor disproving the existence of a God).
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