Rubens Charles Maciel (born December 24, 1979), aka "Cobrinha" and sometimes referred to as Rubens "Cobrinha" Charles, is a

Brazilian Jiu Jitsu Brazilian jiu-jitsu (BJJ; pt, jiu-jitsu brasileiro ) is a self-defence martial art and combat sport based on grappling, ground fighting (ne-waza) and submission holds. BJJ focuses on the skill of taking an opponent to the ground, control ...

(BJJ) competitor. He is considered the best featherweight in the decade and to be among the best pound for pound jiu jitsu competitors in the world. Cobrinha is a black belt in Brazilian jiu-jitsu under Fernando "Terere" Augusto and a member of

Alliance Jiu Jitsu An alliance is a relationship among people, groups, or states that have joined together for mutual benefit or to achieve some common purpose, whether or not explicit agreement has been worked out among them. Members of an alliance are called ...

. Cobrinha has won a total of six world championship titles in Brazilian jiu-jitsu as a black belt in the featherweight (or lightweight) category. He started training BJJ in 2000, received his black belt in 2005, and has since medaled in every

World Jiu-Jitsu Championship The World IBJJF Jiu-Jitsu Championship (commonly known as the Worlds or Mundials) is a Brazilian Jiu-Jitsu tournament held once every year by the International Brazilian Jiu-Jitsu Federation. It is widely considered to be the most important and ...

in which he has competed - a total of ten. He is known for his attacking style of jiu jitsu and, in particular, for his guard. His guard was voted the best Guard of the Decade by fellow World Champions. Before opening his own school Cobrinha BJJ in

Los Angeles, California Los Angeles ( ; es, Los Ángeles, link=no , ), often referred to by its initials L.A., is the largest city in the state of California and the second most populous city in the United States after New York City, as well as one of the world' ...

, in 2011, he was an instructor at the

headquarters in

Atlanta, Georgia Atlanta ( ) is the capital and most populous city of the U.S. state of Georgia. It is the seat of Fulton County, the most populous county in Georgia, but its territory falls in both Fulton and DeKalb counties. With a population of 498,7 ...

. One of his notable students is

Fabricio Werdum Fabricio () is a Spanish male given name. Fabrício () is the Portuguese equivalent. Among those with the first name are: *Fabricio Coloccini, Argentine footballer * Fabrício Guerreiro (born 1990), Brazilian mixed martial artist *Fabricio Oberto, ...

. On January 24, 2022, Cobrinha was announced as the tenth member of the inaugural class of the ADCC Hall of Fame.