While Anil has lent his voice for Karna, Manoj has dubbed for Yudishtir's character in the animated story.
The actors were spotted at the Future Works Studio in Andheri recently and the film's producer Jayantilal Gada confirmed their addition to the cast.
"Both Anil and Manoj have shown full commitment. It was very gracious on their part to agree to impart voices to two very important characters in my film," Gada said in a statement.
Anil took 15 days to complete his work, but Manoj finished the dubbing for his character in just four days.
"Anil gave a lot to my film. Despite his hectic schedule, he took time off to come to the dubbing studio for more than two weeks," Gada said.
The animated film has a star studded cast of voices with megastar Amitabh Bachchan giving his voice for Bheeshma, Vidya Balan has lent her voice for Draupadi, Sunny Deol for Bheem and Ajay Devgn for Arjun.
But the makers are still in search for a voice for the villain Duryodhan.
Gada is planning to release the film this Diwali but says his movie will not clash with "Krrish 3".
"No we're not going to clash with Hrithik Roshan's film, we'll release a week before or later, but in the festive season," he said.
