John C Reilly and Sarah Silverman
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John C Reilly and Sarah Silverman talk Wreck-It Ralph

8 February 2013 Last updated at 00:05 GMT

The stars of Disney's Oscar-nominated animated feature Wreck-It Ralph have spoken about creating their characters for the film.

Sarah Silverman stars alongside John C Reilly, who plays the titular Wreck-It Ralph - a video-game villain who wants to become a hero.

Reilly and Silverman spoke to the BBC's Kev Geoghegan about influencing their characters and improvising.

Wreck-It Ralph clips courtesy of Disney