Thirumurugan was born in a small village in
Thanjavur to Sadasivam, a retired teacher, and Ramalakshmi, a housewife. In the early 2000s, Thirumurugan moved to Chennai to pursue his dreams of becoming a film director and was initially financially supported by his father and sister, S.Padmarangam. He then befriended director
Sargunam, who introduced him to the director
A. L. Vijay, with whom Thirumurugan worked as an assistant in more than 50 commercials and some of his films. When Sargunam got a chance to direct
Kalavani (2010), Thirumurugan became his co-director, before then being asked to appear as the antagonist in the film. After more supporting roles in projects including
Aravaan (2012) and
Eetti (2015), Thirumurugan was cast in the lead role in
Onan (2017) by director Sennan Palassery. ==Politics==