Actor Santhanam will do a double role for the first time. The comedy actor is much in demand and filmmakers think that his presence is a must even for films with big stars to make a difference. However, he has not done a double action role so far. He will be doing a dual role in Vishal's Pattathu Yannai. Pattathu Yannai has Vishal and Aishwarya Arjun in lead roles and it is being directed by Boopathy Pandian of Malaikottai fame. Pattathu Yannai is produced by Michael Rayppan. Thaman is the music composer.