Mars (Universe 7)

Mars II is a planet in the solar system. The planet is populated by Martians.

Overview
Mars II was destroyed by King Nikochan and his assistant. Even though it gets destroyed, it somehow comes back later on as it is seen in "Dr. Mashirito's Ambition: Part 2", where it gets a big crack on its surface due to the fight between Arale Norimaki and Caramel Man 001.

Martians appear in Akira Toriyama's later manga ''[http://dragonball.wikia.com/wiki/Go%21_Go%21_Ackman Go! Go! Ackman], and make a cameo in Dragon Ball''.

Trivia

 * Whereas Mars II was destroyed, its primary universe counterpart survived.