Sidemen Wiki
KSi 0724.jpg
Olajide Olatunji
Harry Lewis
Simon Minter
Vikram Barn
Josh Bradley
New Behzinga logo.jpg
Ethan Payne
Tobi Brown

Yo, what's up. It's yo boy KSIOlajidebt.

Olajide "JJ" Olayinka Williams Olatunji[1] (born June 19, 1993 (1993-06-19) [age 29]),[2] better known as KSIOlajideBT or simply KSI (previously stylized as K.S.I) or just JJ, is a British YouTuber, rapper, actor and boxer who is a member of the Sidemen.[3]


Main article: KSI/Career

Personal life

KSI has a younger brother named Deji, who is also an online YouTube personality.[4][5] Their parents are Jide and Yinka Olatunji.[6] Both his brother and his parents have featured in various videos on his channel. JJ and Deji also have a notable uncle and a maternal grandfather who died before JJ was born.

JJ and his family have all said that he was a shy person as a child and an introvert.[7] This changed once he began uploading on YouTube.

He has previously lived in South East London with Miniminter, Vikkstar123 and Zerkaa in the Sidemen House (and the former Sidemen House) from 2014 to 2019. He now lives in a flat in Central London with Simon, whom he has known since the age of 11. Together they attended Berkhamsted School, a private/independent school in Hertfordshire.


Seana Cuthbert

KSI had a well-publicated relationship with Seana Cuthbert, and the two made several videos together in the early years of his channel. They split in mid-2014 after being together for around two years.[8]  He revealed the news in a video entitled "Googling Myself" released on 4 September 2014. KSI remained adamant that they were still "close friends" and that she's one of the "coolest" girls he had ever met. The rest of the Sidemen often joke about his break up with Seana in their videos by also saying that they are getting back together.

During the "Sidemen Beef", wroetoshaw had a line in one of his diss tracks claiming KSI and Seana broke up because he cheated on her. This is unconfirmed.


KSI is also known for clashing with famous YouTuber PewDiePie around mid-2016 in the midst of the site's infamous "drama" craze. KSI initially grew bad blood towards Kjellberg since he was one of several big YouTubers who criticized the craze as changing the YouTube community for the worse and creating an aggressive atmosphere between other YouTubers.

KSI came out against this stance, calling PewDiePie a hypocrite for releasing monetized videos about drama. Additionally, KSI was wronged by Kjellberg when he accused him of copyright-striking a video of his since it used one of his songs. This led to a series of tweets from KSI where he stated that his music label, not him, filed the strike and that Kjellberg was attempting to make KSI look bad.

The two continually fired shots at one another through Twitter. One such tweet involved KSI claiming that Kjellberg's girlfriend, Marzia Bisognin, would break up with him and get with KSI. The beef was somewhat revived when KSI teamed up with RiceGum in a feud against Kjellberg, with himself and RiceGum reportedly working on a "diss track" together against him (one that currently has yet to be released).

Despite this, KSI came to Kjellberg's defense during the infamous fallout of the media portraying him as an anti-Semite and Nazi as a result of some "offensive" jokes he made, stating that he sympathized with Kjellberg since he knows what it's like to be in that spot.

Ever since then, both KSI and Pewdiepie have admitted in their videos that they respect each other with KSI saying: we're both good YouTubers, if anything there's a level of respect there,[9] and Pewdiepie saying: "he's a level headed dude and I do respect him".[10]

In 2020, he collaborated with PewDiePie on numerous occasions and the two are on good terms.


KSI had a notable ex-girlfriend in 2017. During their relationship, JJ tried his best not to expose her to the public, due to personal reasons and fears that she would be harassed.[11] On 31 July 2017, KSI had an interview with Caspar Lee about his career and revealed that he has a new girlfriend. He said that no one can find who she is and that he doesn't follow her on any social media. On 1 August 2017, DramaAlert released a photograph of KSI and his girlfriend, holding hands. They had their backs to the camera. On 2 August 2017, Deji created a video named REVEALING KSI'S NEW GIRLFRIEND. In the video, Deji claims that she is an American musician - and Instagram-famous persona - Jean Watts. This was obviously false.

As the "Sidemen War" started, Behzinga and W2S "roasted" KSI for not showing his girlfriend anywhere. In October 2017, KSI released a new video titled Mauritius With My Girlfriend. In the video the two are seen in Mauritius and KSI actually revealed her face for the first time. He revealed her name to be Lois. However they broke up about a month later.

Television and Media

  • In his YouTube career, KSI has faced controversy of matters such as sexual harassment, when he "motor-boated" Brandy Brewer at Eurogamer, and his "rape face" which he has addressed and regrets doing.[12][13] Due to these matters, he faced quite a lot of backlash and was ousted from certain events.
  • After becoming a particularly iconic figure in the British media industry, KSI has been invited to appear on numerous television shows, most notably on the reality series Gogglebox, and the fourth season of The Great Stand Up to Cancer Bake Off.
  • In addition to television appearances, KSI previously broke through into the "comedic" interviewing of movie stars, including Dwayne "The Rock" Johnson,[14] Matt Damon[15] and Ryan Reynolds.[16] He hosted a series broadcast on his YouTube channel in 2016 titled Pass the Pad, in which he played computer games with celebrities including Tinie Tempah, Jamie Oliver and Rio Ferdinand.
  • A film titled Laid in America was premiered on 26 September 2016, which starred KSI and fellow YouTube personality Caspar Lee. The film is about two foreign exchange students in America who, on their last day in the country, go on a bizarre quest to lose their virginity. However, with over half a million people downloading the movie illegally it is unlikely there will ever be a sequel.[17]


  • KSI is one of the richest YouTubers in the world having an estimated net worth of $15 million.[18] In 2020, The Times magazine stated that KSI earns an estimated £12 million per year.[19]
  • KSI has a combined total of over 30 million subscribers across his two YouTube channels.[20][21] 
  • KSI's singles - Down Like That, Wake Up Call and Poppin have received over 300 million streams globally.[22] 
  • KSI's main channel is the second most subscribed UK YouTuber channel after DanTDM.[23] 
  • KSI lost his virginity at the age of 19.
  • "KSI" stands for "Knowledge Strength Integrity".[24] He got these words tattooed on his body in 2017.
  • He has a yellow belt in karate.[25]
  • He once lost over 2 billion views by privatizing 1,000+ of his videos when he took a break from YouTube in 2017.
  • He was the first British YouTuber to receive YouTube's Diamond Play Button. He was also the first person of colour to receive the award.
  • He bought a Lamborghini Aventador in 2014 and also owned a Porsche Cayenne (which was allegedly more of a "practical car").
  • In his "Googling Myself" video, KSI revealed that he is agnostic (neither believing in nor disproving the existence of a god).
  • KSI's parents are Nigerian, but he considers himself to be British, as he has lived in the UK for his whole life.
  • KSI took a hiatus in February 2017 when he stopped uploading videos for 5 months. He took a break again later in that same year to train for his fight against Joe Weller.
  • KSI is a supporter of Arsenal F.C.
  • KSI was the online face of Sport Relief in 2014.
  • For some unknown reasons, KSI hates Christmas.
  • Like his brother, he has a peanut allergy.
  • KSI renamed his second channel from 'KSIOlajidebtHD V2' to 'JJ Olatunji' so that he could get his real name on the 10 million subscribers Diamond Play Button.
  • KSI was about 11 years old when he created his first YouTube channel. He used to upload content of the Family Guy TV Show but received a copyright strike, after which he began uploading his first original gaming content of an old game called "June 2000" or "June 3000". Despite having around 10-20 views at the time, he perceived the videos as doing well and was surprised that people checked out that kind of content. Later, he gave his brother Deji the channel, although it is unknown if the channel was ComedyShortsGamer or AngelzKid at the time. KSI then created a new channel called KSIOlajidebtHD, which is known today as JJ Olatunji.[26]
  • As of now, he has a record for the most character portrayals to date.
  • KSI has trypophobia.

External links


  2. all high-ends and also success of the YouTube individuality. (DELETED)
  4. KSI Opens Up About Family Dispute After They Release His Bank Statement
  5. KSI: “A YouTuber doing music leaves a sour taste in people’s mouths. They despise it”
  6. KSI vs Logan Paul prize money: How much money did YouTube stars earn from fight?
  7. GAME OF LIFE YouTube legend KSI reveals the inspiring rags to riches story behind his astonishing success
  8. KS-WHY? Who is Seana Cuthbert, when did she split from KSI and who else has the YouTube star dated?
  9. a very sober video.
  11. Does KSI have a girlfriend? YouTube star's relationship and dating history
  12. We Need To Talk...
  13. KSI finally responds to ‘sexual harassment’ claims and Eurogamer ban
  14. Q&A With The Rock
  17. We Need To Talk.
  18. KSI Net Worth
  19. Rich List: KSI’s YouTube earnings make him one to watch
  20. KSI Social Blade
  21. JJ Olatunji Social Blade
  22. KSI hangs out with Swarmz in stripped down music video for new single Houdini as he gears up for ‘personal’ new album
  24. What does KSI stand for and what is the YouTuber’s real name
  26. KSI Opens Up On His Family, Boxing, Music and YouTube | Minutes With | UNILAD