Maru City (惑星 マール の 街 Wakusei Māru no Machi ) is located on planet Maru and consists of citizens and objects, all of which are round in shape. Samus Aran, Joey Apronika and Diesel arrive here in chapter 2 of Metroid EX: Samus & Joey. The citizens react negatively to their presence, since Joey is not round. However, Diesel is, and Samus is capable of turning into a spherical ball, though this ability was stolen from her. As the citizens leave, a boy trips and tears through his skin, revealing that he is wearing a round suit. His father urges the trio to keep this incident a secret, stating that it is a crime to not be round on Maru. This is because of a law put in place by the planet's ruler Golon, a fanatic obsessed with round things. Anyone who is not round is abducted and imprisoned in Golon's castle never to be seen again.