• Ksi and his brother Deji ( Comedyshortsgamer )
Yo, what's up. It's yo boy KSIOlajidebt
— KSI's intro.

Olajide "JJ" William Olatunji (born June 19, 1993 (1993-06-19) [age 25]), better known as KSIOlajideBT or simply K.S.I (previously stylized as KSI), is a YouTuber and musician who is a member of the Sidemen.


Main article: KSI/Career

Personal Life

KSI has a younger brother named Deji, better known as ComedyShortsGamer who is also an online YouTube personality. Their parents are Jide and Yinka Olatunji. 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.

He 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 with in a flat with Simon, whom he has known since they were 11 years old. Together they attended Berkhamsted School, a private/independent school in Hertfordshire.


Seana Cuthbert

KSI had a well-publicized relationship with Seana Cuthbert, and the two made several videos together. They split in mid-2014 after being together for around two years.

He revealed the news in a video entitled "Googling Myself" released on 4 September 2014. KSI remains adamant that they are still "close friends" and that she's one of the "coolest" girls he has 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 togheter.

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 beefing with famous YouTuber Felix "PewDiePie" Kjellberg 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 criticised 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 and co. hypocrites because they've released 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 rant-ish 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. This is a view shared by many others, and seemingly a sign that the two are on the road to squashing their beef (if they have not done so already).

2017 Girlfriend

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. 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 is false and just "classic Deji".

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. They broke up in late-November 2017.

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. 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 recently on the comedy series 'Backchat', hosted by comedian Jack Whitehall. This special was broadcast on BBC Two on Boxing Day 2015.
  • In addition to television appearances, KSI has started to break through into the "comedic" interviewing of movie stars, including Matt Damonand Ryan Reynolds.
  • A film titled Laid in America was premiered on 26 September 2016. The film 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 is going to be a sequel in the future.
  • KSI currently hosts a series broadcast on his YouTube channel titled Pass the Pad, in which he plays computer games with celebrities including Tinie Tempah, Jamie Oliver and Rio Ferdinand.


  • His YouTube channel is the second-most popular in the UK and the fourteenth-most popular worldwide.
  • KSI stands for "Knowledge Strength Integrity". He has these words tattooed on his body.
  • KSI owned a Lamborghini Aventador and a Porsche Cayenne (which was allegedly more of a "practical car").
  • As well as being the biggest, KSI also has the fastest growing YouTube channel in the Sidemen. His main channel gains an average of 10,000 subscribers per day.
  • KSI allegedly has a net worth of $11 million as of 2016. These earnings are from YouTube videos, music and film.
  • KSI has a YouTube Channel named JideJunior which was created in 2008 before his main channel was created. The channel consisted of FIFA game footage and school projects like raps about physics and chemistry (which reportedly helped KSI remember what he was taught).
  • He is a fan of Arsenal F.C.
  • KSI was the online face of Sports Relief in 2014.
  • In his "Googling Myself" video, KSI revealed that he is agnostic (neither believing in nor disproving the existence of a god).
  • Before being able to secure "ksi" as his Instagram username, it was formerly "therealksi".

External links

Ethan Payne
Harry Lewis
Josh Bradley
KSi 0724
Olajide "JJ" Olatunji
Simon Minter
Tobi Brown
Vikram Barn

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