K. K. Rathnam is also recognized as Judo Rathnam. He works as a fight master/action choreographer in Bollywood and South Film Industries. He was born in a place named Gudiyatham. Later, he worked as a stunt master for a film named Konjum Kumari in 1963. He acted in his last film, Thalainagaram (2006) before his retirement.
Well-known stunt masters of south film industry like
, etc. have worked as fighters and assistants to him in many south indian films. His son Judo Ramu is also working as a stunt master in the films. His grandsons, Judo Lenin & John Prince are also involved in the same profession.