Okello Sandy Thomas commonly known as Fikkizz Ug, is a Northern Ugandan singer, songwriter and performing artist.

Fikkizz Ug was born on the 19/04/2003 from Gulu Regional Referral Hospital. He was raised in both Gulu and Omoro District.

He started gravitating towards his music career in 2019 where he recorded his first single titled Muziki.