He is of Nigerian descent and his wife is Yinka, whom he has been with for around 26 years.
Jide was born August 28, 1966 in Ibadan, Nigeria to Olatunde (OLA-TUN-DAY) Olatunji and Nike (NEE-KAY) Olatunji. In some of Deji’s videos, Jide seems to be displeased or wince when talking about his mother. It has been confirmed that Jide's real name is Olajide Olatunji making KSI's legal name 'Olajide Olatunji, Jr.'. Overall Jide has proved himself to be a great father and best friend to his sons Deji and JJ.
Jide features heavily in many of Deji's YouTube videos, and is often used as the cameraman. Because of this, many commentators have suggested Jide create his own YouTube channel since he carries most of the weight of the ComedyShortsGamer channel.