Enthiran (transl. Robot) is a 2010 Indian Tamil-language science fiction action film co-written and directed by S. Shankar. It is the first installment in the Enthiran film series. The film stars Rajinikanth, who plays a dual role as a scientist and the robot alongside Aishwarya Rai Bachchan in the lead roles with Danny Denzongpa, Santhanam and Karunas in supporting roles. The soundtrack album and background score were composed by A. R. Rahman while the dialogues, cinematography, editing and art direction were handled by Madhan Karky, R. Rathnavelu, Anthony and Sabu Cyril respectively. The story revolves around the struggle of a scientist named Vaseegaran to control his sophisticated android robot named Chitti, after Chitti's software is upgraded to give it the ability to comprehend and exhibit human emotions. The project backfires when Chitti falls in love with Vaseegaran's girlfriend Sana, and is manipulated by Vaseegaran's mentor Bohra into becoming homicidal.

Shankar Shanmugam, credited as S. Shankar or his mononym Shankar, is an Indian filmmaker who works predominantly in Tamil cinema. He is one of the most prolific and highest paid film directors in India. His films typically deal with the contemporary social issues, vigilante themes and the usage of state of the art technology and VFX. He has won one National Film Award, four Filmfare Award South and six Tamil Nadu State Film Awards in his career.