Rubens Charles Maciel

Rubens Charles Maciel (born December 24, 1979), aka "Cobrinha" and sometimes referred to as Rubens "Cobrinha" Charles, is a Brazilian Jiu Jitsu (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. 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 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, in 2011, he was an instructor at the Alliance Jiu Jitsu headquarters in Atlanta, Georgia. One of his notable students is Fabricio Werdum. On January 24, 2022, Cobrinha was announced as the tenth member of the inaugural class of the ADCC Hall of Fame.