Kartik Aaryan-starrer 'Chandu Champion' is based on the life of Padma Shri awardee Murlikant Petkar - India's first Paralympic gold medallist. Petkar was an Army man and boxer before he was crippled after sustaining nine bullet wounds in 1965 war against Pakistan. He switched to swimming and set a world record in the 50m freestyle swimming event in 1972 Paralympics.