YouTube sensation KSI is one of the biggest names on the video platform and has successfully expanded his career into music, boxing and beyond.
KSI rocketed to fame as a FIFA player in 2009, posting videos of him playing the football game, as well as occasionally other popular video game titles such as Grand Theft Auto.
The influencer may now be recognised more for his amateur boxing fights against other YouTube personalities and for launching a music career, focusing mostly on 'diss' tracks.
So how much does the YouTuber earn per year and what else does he do? Goal takes a look.
What is KSI's net worth?
KSI reportedly earns £2.9 million ($4.5m) a year through his work as a YouTuber, although his earning will fluctuate depending on his activity as he isn't paid a salary by the company but earns money from advertising revenue and sponsorships.
Alongside his channel, KSI has branched out to creating music videos and has taken part in several amateur boxing matches against other YouTube stars with prize money expected to boost his overall net worth.
Who is KSI?
KSI, full name Olajide William Olatunji, launched his first YouTube channel in 2008. However, his most successful one KSIOlajideBT was launched in 2009 and to date, has over four billion video views and more than 19 million video subscribers.
While making videos catered around FIFA he also competed in eSports competitions and most notably beat Virgin Gaming co-founder Zach Zeldinfull in a game of FIFA. During this time, he and four other gaming YouTubers formed a group called the Ultimate Sidemen, later expanding to make seven members in total.
In 2017, due to internal conflicts, KSI left the Sideman group and went on to release 'diss' tracks against several members of the group. However, a few months later he re-joined the Sideman group which led to accusations from many other YouTubers that the conflicts were fake and designed to generate views on KSI and the other members of the group's videos.
YouTube personality Joe Weller also released a 'diss' track of his own aimed at KSI and led to a Twitter row between the pair. Following the Twitter argument, they announced they would be taking part in a boxing match against each other. This took place in February 2018 and saw KSI win the fight in the third round by technical knockout.
In August 2018, KSI took on Logan Paul in the most lucrative non-professional boxing event of all-time alongside his younger brother Deji, more commonly known as his YouTube channel name ComedyShortsGamer, who took on the younger of the Paul brothers Jake Paul.
KSI's fight with Logan Paul ended in a draw and is estimated to have earned in excess of £37m ($50m) in streaming revenue.
What football team does KSI support?
KSI is an Arsenal supporter and has been involved with AFTV. He has also created videos with various current and former Gunners including playing FIFA against Alex Oxlade-Chamberlain. and Mesut Ozil.
During the 2018 World Cup, KSI posted an Instagram post showing his allegiance to Nigeria.