Fart is a gaseous being who appeared in the episode "Mortynight Run" Although nameless, it took on the name "Fart" for convenience after Rick insulted it. It communicates through telepathy. His species regard carbon-based life forms as a threat to all "higher life" and a "disease.
Fart is a life form from another dimension that was being held captive and ordered to be assassinated by Krombopulos Michael. He has the ability to produce any element from any atom by adding or removing protons. K. Michael states that Fart "can't be killed with regular matter" when he purchases an anti-matter gun from Rick for 3000 flurbos. Rick flies Fart to the location of the wormhole that will lead him home. Fart reveals to Rick that he plans to return with many more of his kind on a mission to destroy all carbon-based life.