Jose Mathias Macedo de Lira Luna, commonly known as Mathias Luna, is a Brazilian jiu-jitsu black belt under Ricardo Feliciano (Pantcho) and Lucas Leite of the Checkmat Team, who worked extensively at the Barreto Brothers Academy in Natal, RN - Brazil, namely with Bruno and Thiago Barreto. Mathias and his twin brother Matheus Luna ascended to the top of jiu-jitsu's competitive rankings as purple belts a status they further cemented on their path to black belt.