Mohan was born on 3 April 1956 in Kattumarakaran. He entered the Tamil industry in the year 1995. Mohan Raman did his primary schooling at Vidhya Mandir and high school at Madras Christian College School. Then he did his graduation in B.Sc. Physics from Loyola College, Chennai. Later he pursued MBA, specialization in Marketing and Human Relations from XLRI Jamshedpur - one of India's prestigious Management Institution. He is the eldest son of lawyer and politician V. P. Raman and elder brother of P. S. Raman, Former Advocate-General of Tamil Nadu. His daughter Vidyullekha Raman made her debut in Neethane En Ponvasantham He is also the uncle of Gautam.S.Raman. He is a popular speaker and his speeches on The History of the Tamil Film Industry, Law in Cinema, Management in Movies earned fame and good reputation. He was then introduced into the film industry by his friends G. Thyagarajan, G. Ramkumar. He is today one of the popular character actor in Television who was introduced by K. Balachander. He has done more than 100 films and 6000 TV serials and Episodes playing wide range of roles from villain to a comedian. His roles on TV serials like Sun TV's Chinna Pappa Periya Paapa, Marmadesam, Vijay TV's Kavyanjali, Sun TV's Abhirami to name a few is worthy to point out.