Carlos Rivas (born Oscar Weber) was a Native Hispanic/Latino-American actor, best remembered as Lun Tha in The King and I (1956), Dirty Bob in True Grit (1969), and Hernandez in Topaz (1969). Carlos Rivas was discovered in a bar in Mexico. He began his career in Latin-American westerns, though his Argentinian films were actually filmed in Mexico. His American debut was in The King and I (1956) opposite Rita Moreno. After this career highlight, he was quickly reduced to supporting roles. That s...