Karadagián was born in the San Telmo ward of Buenos Aires to a Spanish mother and Armenian father.

He was undefeated during this time defeating men like Marvin Mercer, Mike Clancy, Steve Karras, The Golden Superman, and Sam Berg.

[3] He began his career as an actor in the 1957 drama Reencuentro con la gloria (Reencounter with Glory), in which he played a fighter who accidentally kills his opponent.

The series became popular elsewhere in Latin America, and during a 1974 episode filmed in Costa Rica, Karadagián reportedly entered into a bout with presidential candidate Gerardo Wenceslao Villalobos (who won).

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