Joaquín Cosío Osuna (born 6 October 1962) is a Mexican actor and poet. He is best known for roles such as Rubén "Mascarita" in Matando Cabos (2004), General Medrano in Quantum of Solace (2008), Ernesto Fonseca Carrillo in Narcos: Mexico (2018–2021) and Major General Mateo Suárez in The Suicide Squad (2021), among others.
Cosío began his theatrical career in the early 1980s.
He made his film debut in 2001 in the film The Blue Room and he has participated in over 30 feature films and several shorts. Cosío played a multi-episode role in the HBO comedy Eastbound & Down.[citation needed] He played General Medrano, one of the main villains in the James Bond film Quantum of Solace, and acted alongside Benicio del Toro in Oliver Stone's gritty thriller, Savages. Cosío appeared in Robert Duvall's A Night in Old Mexico, and in Disney's 2013 film The Lone Ranger. He played Don Neto in Narcos: Mexico in 2018. He played Casimiro in Netflix’s Gentefied in 2020.[citation needed]
He was nominated for the Mexican Academy of Film Awards, the Arieles, three times: in 2005 for his portrayal of the lovable and ruthless "Mascarita" in the Mexican box office hit Matando Cabos, in 2011 for his work in the film El Infierno for which he won his first Ariel and also the National Board of Cinema's award for Best Actor.[citation needed] His most recent Ariel nomination was in 2012 for his work in Pastorela. In 2012, he became the first Mexican recipient of the MGM My Favorite Award, which was created to honor international motion picture artists and with the purpose to ensure that great accomplishments from the international film-making industry professionals are recognized.[citation needed]

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