Vishnu Kumar rose to fame with his role in Office, a popular Television series which aired on Star Vijay. The series aired for two seasons and he became a household name. His other notable serial was Kana Kaanum Kaalangal Kallooriyin Kadhai. He has also appeared in films such as Yennamo Yedho, Bhooloham, and Ivan Yarendru Therikiratha. He is also associated with 2018 film 6 Athiyayam.