Mars is a planet first seen in the Animated Short episode, where Abraham Lincoln cheered Finn up. It is seen again in the episode "Sons of Mars," where Magic Man (which was really Jake) was held on trial to be executed. It seems to have some kind of atmosphere to keep in air. A couple of the inhabitants of Mars are Grob Gob Glob Grod and Abraham Lincoln. The Martian Transporter is the only known way to get to Mars, apart from flying, which Grob Gob Glob Grod does.