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Hey, guys. It’s ya boy, KSIOlajidebt!


Olajide Olayinka Williams Olatunji (born: June 19, 1993 (1993-06-19) [age 25]), better known online as KSI, KSIOlajidebt or JJ, is a British YouTuber, filmmaker, actor and musician mainly known for his boxing, diss-tracks, vlogs, and formerly FIFA. KSI had also said the name "KSI" stands for Knowledge, Strength, Integrity.

KSI's channel is the top 50 most subscribed YouTube channels ever, with over 19.2 million subscribers on his main channel, peaking in the top 25, and has over 4.8 million on his second channel. He has over 4.3 billion views on his main channel, putting his channel network in the top 250 most viewed on YouTube, and 730 million views on his second channel. He's the second-most subscribed YouTuber from the United Kingdom, just behind DanTDM. He also is the most subscribed black person on YouTube as well. KSI's brother is ComedyShortsGamer, and is the second most subscribed black YouTuber. He has also made music videos, books, has merchandise, and has appeared on other media platforms throughout his career.

Personal Life

Olajide Olatunji was born and raised in England by Yinka & Jide Olatunji and, when first starting YouTube, lived with his parents in Watford alongside his brother, Deji. Olatunji can be considered partly responsible for the start of Deji's YouTube channel as they shared a sibling rivalry and used to appear in each others' videos. He is one of the most successful YouTubers from the site with an estimated net worth of 5 million and an average 5.0 million views per video.

Olatunji's overconfident and crazy personality means he sticks out in the FIFA YouTube community; and the humour in his videos often show the FIFA community's frustrations at the DEA and the FIFA games themselves. He is also very well known for his constant joking about his race as well as other issues that is known in society.

Olatunji has a second channel, KSIOlajidebtHD, where he uploads videos of a large array of different video games. He is most well known for uploading random games on this channel, these videos usually feature his younger brother, Deji (also known as ComedyShortsGamer).

He used to date vlogger 'Seanyxxx' (better known as Seana) but broke up with her in 2014. The two are secretly "going out" according to JJ's brother Deji. He has dated many girls though, along with his brother. He now has a dog named ZoZo.

Channel Blackout

In 2017, KSI blacked out all of his social media accounts, including his YouTube channel. He deleted most of the channel's videos, going from over 1,100 videos to only a bit over 100. He also had 3 billion views but since dropped to 1 billion due to privating over a thousand of his videos. KSI for around four months hadn't uploaded a single video which decreased his channel growth until his return.

He has expressed that the reason he did that was because he wanted a break from YouTube and wanted to do other things in life and be a better human being. In an interview with Keemstar, he said he felt the best he ever had in his life due to his decision and he could've deleted more videos that he thought didn't fit but couldn't due to various reasons.

In June 2017, four months after his last video was uploaded, he uploaded a video stating that he would be returning to making videos. A week later he uploaded a music video for a song called "Creature". On July 23, he talked to his YouTube audience for the first time where he said that he left YouTube because he wasn't enjoying it anymore and he wanted to start making content he enjoyed rather than content which is trending or what people want him to do as he did when he started YouTube. He explained that he did not like where YouTube was going, mainly shown by longer videos for high revenues and was glad for the people who understood where he is coming from and said he would return again soon.

The video recieved a lot of likes and views in a short amount of time and the channel's subscriber and view growth skyrocketed once again following the announcement.

A few months after his return, he retrieved all of his deleted videos and recieved all of his views back, now nearing 4 billion views. This has caused some people to believe he left YouTube, along with The Ultimate Sidemen for a short time, to take a vacation, promote his new songs and get his channel more attention.

Ameteur Boxing

On February 3, 2018, KSI competed in his first boxing match against fellow YouTube personality Joe Weller at Copper Box Arena in Hackney Wick, London, winning the fight 1 minute and 30 seconds into the third round by a technical knockout. KSI showed respect to Weller after the fight for being "way harder, way tougher than I thought", and praised him for his commitment to raising awareness on mental health issues. He then proceeded to call out American internet personalities Logan Paul and Jake Paul and retired footballer Rio Ferdinand.

On the weekend of 24 February 2018, it was announced that the Paul brothers would be fighting the Olatunji brothers (KSI and his younger brother Deji , also known as ComedyShortsGamer) in a boxing match, with the matches divided between relative ages (the elder brothers KSI vs. Logan Paul in one match and the younger brothers Deji Olatunji vs. Jake Paul in another match). The boxing matches will take place on August 25, 2018, in Manchester, UK. However, unlike the KSI vs. Joe Weller boxing match, this event will be pay-per-view ($8 or £6) to watch online on YouTube.

Gaming Channel

Olantunji has two YouTube channels. His main channel is called KSI which focuses on gaming, sketches vlogs, and occasionally music videos. His other channel is called KSIOlajidebtHD, where he uploads other games (primarily GTA V and other video games). This gaming channel is currently inactive, and it is unknown if JJ is going to further continue on uploading onto the channel.

Eurogamer Incident

JJ was banned for life from the Eurogamer Expo (known today as EGX) in 2012 due to alleged sexual harassment. After the incident, Microsoft cut all ties with JJ and he stated an apology.

The Ultimate Sidemen

JJ helped form a group called the Ultimate Sidemen alongside some of his closest friends. Initially, the group consisted of six relatively famous British YouTubers (KSI, Miniminter, Vikkstar123, Behzinga, Zerkaa, and TBJZL); they would add a seventh member (W2S) in 2014. On 4th August 2017 JJ tweeted out confirmed that he had chosen to leave the Sidemen, claiming to want to "move onto bigger things". Going in a diss track and video response feud, he left the Sidemen house and stayed in the Hollywood Hills with fellow popular YouTuber, RiceGum. He went back to the Sidemen house after him saying he can't stay in America for "personal reasons" shortly afterwards, with much approval from them, settling their differences amd getting back together.


KSI has a vast array of contacts and commonly collaborates with many YouTubers including:

Subscriber Milestones

  • 1 million subscribers: December 23, 2012.
  • 2 million subscribers: April 22, 2013.
  • 3 million subscribers: August 5, 2013.
  • 4 million subscribers: October 27, 2013.
  • 5 million subscribers: February 11, 2014.
  • 6 million subscribers: June 16, 2014.
  • 7 million subscribers: September 30, 2014.
  • 8 million subscribers: January 7, 2015.
  • 9 million subscribers: April 5, 2015.
  • 10 million subscribers: July 28, 2015.
  • 11 million subscribers: November 2, 2015.
  • 12 million subscribers: February 16, 2016.
  • 13 million subscribers: June 5, 2016.
  • 14 million subscribers: August 1, 2016.
  • 15 million subscribers: November 13, 2016.
  • 16 million subscribers: March 11, 2017.
  • 17 million subscribers: August 26, 2017.
  • 18 million subscribers: February 11, 2018.
  • 19 million subscrubers: July 20, 2018.

Video View Milestones

  • 1 billion views: August 17, 2014.
  • 2 billion views: October 7, 2015.
  • 3 billion views: September 23, 2016.
  • 4 billion views: February 21, 2018.


  • KSI made a game called KSI Unleashed.
  • He has met and/or collaborated with many stars in his videos.
  • KSI was a shy person growing up.
  • Since 2014, KSI had been the most subscribed British YouTuber although DanTDM surpassed him briefly from January to February 2018. He then re-surpassed him after his boxing match with Joe Weller. His subscriber growth has sinced slowed down, and DanTDM surpassed him again in April 2018. He is currently the second-most subscribed YouTuber from the United Kingdom.
    • KSI was also the first British YouTuber to recieve YouTube's Diamond Play Button.
  • KSI's parents are Nigerian, but he considers himself to be British, as he has lived in UK for his whole life.
  • KSI is also the most subscribed Black YouTuber and the first Black person to receive the Diamond Play Button.
  • His channel had a brief hiatus when he stopped uploaded videos in February 2017, and resumed uploads in June 2017.
  • KSI once lost over 2 billion views by privating 1,000+ of his videos and took a break from YouTube. After his return, he made all his videos public again and now has his 2 billion views back.