9 (2009)
Based upon a titular 2005 short film by Shane Acker, the story is that the fabrication machine (some call him Mr. Fab) made an army of robots to kill of mankind using toxic gas to eradicate all humans and animals on Earth. All that's left are nine living ragdolls known as "Stichpunks," as well as the scary cyborgs that are hunting them. The goal for the stichpunks was to revive some kind of bacterical organisms to get the whole cycle started again and bring back some life into a post-war dead world. Dead, except for the cadaver robots hellbent to eradicate the nine remaining life forms on Earth.
This animated film was produced by Tim Burton and directed by the guy who directed Wanted. The film and the original belong to Shane Acker.
The film barely made back its budget and it had mostly mixed reviews on Rotten Tomatoes.
Now that I explained the idea of the film, who says you should take the apocalypse seriously, let alone an animated one?