During his time in college, he used to read books a lot. He found possibility for a film in
N. N. Pisharody's novel
Vellam, he approached director
Hariharan, who agreed with him,
M. T. Vasudevan Nair wrote the screenplay, it was the first and last screenplay of his not based on his own story. Devan produced the film, filming was halted midway due to financial crisis. He made his acting debut in
Ashatapathi to raise fund to resume filming, it was followed by a number of acting projects. After which, shooting resumed, but upon release, the film failed at the box office. In an interview, he said that
Vellam (1985) is the best film come out from Hariharan-M. T. Vasudevan Nair combination. It was in the 1987 film
New Delhi that he first appeared as a villain, since then he was
typecast as a villain in Malayalam cinema. However, in Telugu cinema, he is known for
character roles. Devan recalled in an interview that his best roles were in Telugu and Tamil cinema. His most notable movies are
Ekalavyan,
Baasha and
Indraprasdham. He has also acted in several TV series. ==Personal life==