The Southern Mbundu, now generally called Ovimbundu (singular Ocimbundu, adjective and language Umbundu), are an ethnic group who lives on the Bié Plateau of central Angola and in the coastal strip west of these highlands. As the largest ethnic group in Angola, they make up almost 40 percent of the country's population. Overwhelmingly the Ovimbundu follow Christianity, with roughly equal shares falling to the Catholic Church and to different Protestant denominations, mainly the Igreja Evangélica Congregacional de Angola (IECA), founded by American missionaries. However, some still retain beliefs and practices from African traditional religions.

The origins of the Ovimbundu are populations who drifted in from the North, over the last millennium, and formed local/regional groups which slowly became political units and foci of social identity: M'Balundu, Sele, Wambo, Bieno and others. They developed a sophisticated agriculture, completed by the breeding of small animals (chicken, goats, swine) as well as of a modicum of cows bought from the farmer-herders to the South (Nyaneka-Nkhumbi, Ovambo).

Regina Maria Barreto Casé (born February 25, 1954 in Rio de Janeiro, Brazil) is an actress and comedian.

She gained notoriety in the group Asdrúbal Trouxe o Trombone and in the sitcom TV Pirata. In the 1990s she presented the TV shows Programa Legal, Brasil Legal and Muvuca on Rede Globo. Nowadays she's on Futura channel and in Central da Periferia on Rede Globo, firstly a sketch at Fantástico.