The names of their characters are Kanmani, Rambo, and Khatija (KRK) respectively, which also is an acronym to the title of the film. Vijay Sethupathi’s character in the film is actually the shortened version for ‘Ranjankudi Anbarasu Murugesa Boopathy Ohoondhiran’. Nayanthara plays Kanmani and Samantha plays Khatija.