Mila Kunis to lend her voice in animated film

Los Angels: `Friends with Benefits` star Mila Kunis has been added to the voice cast of animate film `Hell & Back`.

The 28-year-old actress is all set to voice a demon named Deema in the adult animated film, which has been granted an R rating, reported Ace Showbiz.

The film is a comedy that follows two best friends as they try to save their buddy who is dragged to Hell.

ShadowMachine announced Kunis` casting for the film, which marks the studio`s first R-rated animated feature.

"We`re thrilled to have Mila involved. Her unique blend of comedy and charm fits perfectly with what is sure to be one of the most memorable animated female characters in a long time," said ShadowMachine`s Corey Campodonico.

Kunis joins a set of actors who have previously been added to the voice cast. They include Nick Swardson, TJ Miller, Rob Riggle, Brian Posehn and Kumail Najiani.

The film will be directed by Tommy Gianas and Ross Shuman.