Kamal Hassan spoke about the modulations in Dasavatharam. For villain Fletcher’s role, his daughter Shruthi Haasan had suggested an English film for him to watch. He saw it and imitated a character’s style of talking. Kamal followed Bush’s walking style. For the Japanese character, he had a coach to teach him and also learned the martial art Aikido. For the CBI officer Balaram Naidu’s character, he used the Telugu slang of coastal Andhra region. In the Telugu version, they made the character as the Tamil speaking Balaram Nadar.
In the Hindi version Kamal becomes a Bengali. And there is this Marathi mixed Hindi too. For each character they Kamal has tried two to three types of modulations and finally arrived at one. So the effort is like working for thirty characters though Kamal played ten roles.