For the letter R, these two personalities are the most apt people I could think of :). These two people are considered as cultural icons and the most awesome and popular in their respective fields. While Rajinikanth is considered as the SUPERSTAR of movies, AR Rahman is considered as the Mozart of Madras.
|AR Rahman - Image source: forbesindia.com|
|Rajinikanth - Image source: http://www.indiglamour.com/|
Both of these amazing people did not have a good childhood. Both of them have struggled to come to the place they are right now. While Rahman was born and brought up in Chennai, Rajinikanth is a native of Bangalore and came to Madras where he proved his mettle as an actor.
The great thing about these stars is that even after they have achieved tremendously, have a staggeringly large number of fan and respected by people all over India, they are humble and simple.