Ovidio Guzmán López, commonly known as “El Ratón” or “El Nuevo Ratón” (“The Mouse” or “The New Mouse”) is a Mexican suspected drug lord and high-ranking member of the Sinaloa Cartel, a criminal group based in Sinaloa. He is the son of Joaquín “El Chapo” Guzmán, once considered Mexico’s most-wanted drug lord.

