Question: is jj from sidemen ksi?
Answer: Olajide "JJ" Olayinka Williams Olatunji (born June 19, 1993 (1993-06-19) [age 27]), better known as KSIOlajideBT or simply KSI (previously stylized as K.S.I), is a British YouTuber, rapper, actor and boxer who is a member of the Sidemen.