Watch I, Chihuahua (1970) : Full Movie Online Free The ultimate underdog tale of Chacho—a scrappy masked Luchador Chihuahua, who embarks on a hilarious and action-packed journey around the world to fight for his family. After learning his beloved home is in danger, Chacho dons a Lucha Libre mask to become Luchacho. Our masked underdog then enters an international fight tournament, competing against a hilarious and eclectic mix of animal fighters from all over the world, in the lead-up to a final, epic fight against the nefarious beast known as Chamuco, The Widow Maker.