Alvinnn and the Chipmunks is a 2007 film about songwriter David Seville, who finds success when he comes across a trio of singing chipmunks, who are mischievous, leading Alvin, brainy Simon and chubby, impressionable Theodore. The film was based on the Alvin and the Chipmunks characters created by Ross Bagdasarian. It was followed by Alvin and the Chipmunks: The Squeakquel (2009), Alvin and the Chipmunks: Chipwrecked (2011), and Alvin and the Chipmunks: The Road Chip (2015).