If reports are to be believed, Amala Paul was the favourite choice for the female lead role in Singam. After coming across her looks of her earlier films, Hari directly met director Lingusamy and asked him to show some of her pictures and videos from her upcoming Tamil movie Vettai. After going through it, he felt that Amala was the right candidate for the role and offered her the movie.
Hari's Singam 2 is a sequel to Singam, which starred Surya and Anushka Shetty in the lead roles. However, it is not sure whether the filmmaker will retain other cast and crew for the second instalment.