Kristen Bell is set to voice the leading female voice in Warner Bros.' CG-animated film Astro Boy, according to Variety.

Bell joins Nicolas Cage, Scarlett Johansson, Donald Sutherland, Bill Nighy, Nathan Lane, Eugene Levy, Freddie Highmore in Astro Boy, which tells the story of a powerful robot boy created by a brilliant scientist in the image of the son he has lost. Our hero journeys to find acceptance in the human world, and ultimately discovers true friendship as he uses his incredible powers to help others and save Metro City from destruction.

Astro Boy will be released worldwide in 2009.