Chitti is a fictional character and the primary protagonist of the Enthiran film series. The character was portrayed by Rajinikanth in Enthiran, 2.0 and as a cameo in Ra.One. Chitti was imagined, created and developed by S. Shankar. Concept and creation The visual appearance of Chitti was based on the G.I. Joe action figures. For Chitti's 2.0 version look, its hair was spiked and brown coloured lenses were used for its eyes, whereas for its "good robot" look, green coloured lenses were used. The wig used for Chitti's 2.0 look had a silver streak in the middle, made out of yak hair, while its leather jacket was designed by Vogt. Suits made of copper were used for Chitti's costume. Biography Chitti (played by Rajnikanth) is a humanoid robot created by Dr. Vaseegaran, (also played by Rajinikanth). Dr Vaseegaran, who is specialized in robotics, created Chitti after a decade of unsuccessful attempts and intensive research. Vaseegaran makes Chitti an exact look-alike of himself. The robot is named Chitti, as suggested by Vaseegaran's mother. Vaseegaran made Chitti interact with people outside the lab to socialize him with the outside world and saw how he used his intellects and abilities amongst humans. In order for the robot to understand human behavior, Vaseegaran taught the robot about emotions and upgraded the software to give it the ability to comprehend and exhibit human emotions. But then the robot fell in love with the scientist's girlfriend, Sana (played by Aishwarya Rai) and thus it caused conflict between them. Angered by the robot, Vaseegaran chopped the robot into pieces. He was found by Dr. Bohra (played by Danny Denzongpa) and upgraded into advanced version 2.0 with additional software, ‘red chip’ which functions as a destructive program installed in Chitti’s software system. He converts Chitti into a ruthless killer and then Chitti turned into a destructive killing machine and killed Bohra. He then went after Vaseegaran and Sana and crashed their wedding. He showed numerous other powerful abilities including shapeshifting as well as duplicating. However, Vaseegaran managed to defeat and stop Chitti. Since he caused so much damage and destruction to the city, he was de-activated and dismantled. His body parts were then displayed in the museum in the year 2030 as the most advanced humanoid robot ever built. Chitti reappeared in the film Ra.One in a special non-canon appearance. Rajinikanth did not play Chitti in the film