Both Megan Fox and John C. Reilly are set to appear in The Dictator.

The pair have signed up to make cameo appearances in Sacha Baron Cohen's forthcoming comedy, though the nature of their roles is being kept under wraps.

The film - which is currently being shot in New York - chronicles the story of a Middle Eastern despot who is removed from his position and flees to the US after he is replaced by a lookalike former goat herder, with both roles being played by Sacha. Sir Ben Kingsley, Jason Mantzoukas and Anna Faris are already signed up to appear in the film, which is being directed by Larry Charles.

Last week, footage emerged of Sacha - in character for the movie - being apprehended by a waiter as he stole food from a diner at New York restaurant Orsay. The comic, wearing a pink t-shirt and denim shorts, fled with a plate of food and a glass of wine, but was chased by the server and tackled to the ground. Later in the evening, he was seen in the same outfit outside a restaurant which doubles as the one his character owns in the film.

However, following complaints from local residents, the film crew were forced to cover a sign that read "Death to Alladeen" and had an image of Sacha's character in the sign with a red circle and slash through the middle of it.

The film is scheduled for release in May 2012.