
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 same year of 1956 he appeared as Johnny Bravo in the TV western Cheyenne in the episode titled "Johnny Bravo." Rivas had co-starring roles in two science fiction films, The Beast of Hollow Mountain (1956) and The Black Scorpion (1957). Rivas played Chingachgook in The Deerslayer (1957) with Lex Barker, Forrest Tucker, and Rita Moreno.
In 1970, Rivas joined Ricardo Montalban, Henry Darrow, and other Hispanic/Latin American actors in co-founding the Nosotros ("We") Foundation, a Los Angeles based organization devoted to improving the way Hispanic/Latin Americans are depicted in entertainment and advocating for Hispanic/Latin Americans in the movie and television industry.

True Grit
1969 · as "Dirty Bob"

The King and I
1956 · as Lun Tha

Topaz
1969 · as Hernández

The Unforgiven
1960 · as Lost Bird

The Undefeated
1969 · as Diaz

Mi Vida Loca
1994

Gas Food Lodging
1992 · as Padre

Pepe
1960 · as Carlos

Machete
1958 · as Carlos

Young Rebels
1989 · as Mr. Vincenzo

The Miracle
1959 · as Carlitos

The Deerslayer
1957 · as Chingachgook

The Gatling Gun
1971 · as Two-Knife

Doc Savage: The Man of Bronze
1975 · as Kulkan

Sonatas
1959 · as Juan Guzmán

The Black Scorpion
1957 · as Artur Ramos

The Phantom Gunslinger
1970 · as Sam

Los secretos del buzón
1948