Vinicius de Oliveira Prestes de Matos (born November 30, 1995), also known as Vinicius LokDog, is a Brazilian professional mixed martial artist and rapper currently competing in the bantamweight division of the Ultimate Fighting Championship (UFC). Oliveira was born in Porto Alegre, in the southern Brazilian state of Rio Grande do Sul. He began training in combat sports at a young age, developing a strong foundation in Brazilian jiu-jitsu and striking. He turned professional in 2017 and quickly gained regional acclaim on the Brazilian scene. Oliveira later competed for UAE Warriors and other international promotions before being invited to Dana White's Contender Series in 2023.