Having gained appreciation and recognition with his debut movie Vamsam, Arulnithi Tamilarasu is an Indian movie actor, appearing in mostly Tamil language movies. He then played a dual role in Mouna Guru, which went on to become a critical success and eventually a sleeper hit. He then featured in movies like Demonte Colony, Naalu Policeum Nalla Irundha Oorum, Aarathu Sinam, and Brindhaavanam.