Thembalethu Brian Ntuli (born 7 March 1991), also known by his professional name Themba Mncube, is a South African filmmaker and actor. He is best known for the roles in the television serials such as Rhythm City, B&B and the film Lokoza.
Mncube was born on 7 March 1991 in South Africa. He grew up in Ekhuruleni on the East Rand. He completed education from Germiston. Since school times, he went to drama classes. He graduated with a degree in filmmaking from the AFDA, The School for the Creative Economy (AFDA Johannesburg).
He is married to his longtime partner Hope Masilo. They started the affair in 2008. The wedding was held at EnGedi: The Oasis in the Cradle, Muldersdrift in March 2019.
As an actor, he appeared in the popular television commercials for 'Sunlight' and 'South African Broadcasting Corporation' (SABC2). After graduation, he joined with Moonyeen Lee and Associates. In 2008 when he was in grade 11, Mncube played a popular recurring role as the young car guard "Pule" in the e.tv soap opera Rhythm City from May to June, 2008. In the same year, Mncube starred in a brand campaign for SABC2. In 2011, he became very popular with the television commercial 'Vodacom.'
In 2015, he was cast in the lead role of "Cuba" in the e.tv sitcom B&B. In 2016, he acted in the film Lokoza directed by Isabelle Mayor. In 2018, he acted in the films Frank & Fearless and Meerkat Maantuig.