KSI

Olajide Olayinka Williams "JJ" Olatunji (born 19 June 1993), known professionally as KSI, is a YouTuber, musician and professional boxer. He is a co-founding member of the YouTube group called, Sidemen.

Olajide Olayinka Williams Olatunji
KSI in 2019
Born	Olajide Olayinka Williams Olatunji[1][2] (1993-06-19) 19 June 1993 (age 32) Watford, Hertfordshire, England[3]
Occupations	YouTuber rapper professional boxer[4] actor singer
Height	5 ft 10 ½ in (179 cm)
Relatives	Deji (brother)[4]
YouTube information
Channels	KSI JJ Olatunji
Years active	2009–present
Genres	Entertainment comedy gaming music
Subscribers	30.8 million (combined)
Total views	7 billion (combined)
Creator Awards
Last updated: 7 June 2020
Musical career
Genres	British hip hop grime
Years active	2015–present
Labels	RBC BMG Island Dcypha
Boxing career
Other names	The Nightmare[5]
Statistics
Weight(s)	Cruiserweight[5]
Height	6 ft 0 in (183 cm)[5]
Reach	76 in (193 cm)[5]
Stance	Orthodox[5]
Boxing record
Total fights	5
Wins	4
Losses	1

KSI was ranked as the second most influential online creator in the United Kingdom by The Times.^[6] He had a boxing match with Lee Corso.

His first studio album, Dissimulation, released in 2020, debuted at number 2 on the UK Albums Chart. His second studio album, All Over The Place, debuted at number 1.

His name “KSI” stands for Knowledge, Strength, Integrity.

KSI is of Nigerian descent.

In his boxing career, he has fought and beaten Joe Weller, Logan Paul, Swarmz, Luis Pineda and Joe Fournier, however he controversially lost to Tommy Fury on 14 October 2023 on Misfits 10.

In October 2024 he released a song called Thick of It which got popular on social media for being "mid" which is a term used by Gen Z and Gen Alpha.^[7]

Thick of It made his reputation become horrible after people didn't like his song however this distaste helped his song grow to become No.1 in December 2024.