The hometown of most of the story's protagonists and a few of the antagonists lived in the anime-influenced animation, Creature Planet. People outside the city have known this place as the first city to have been built to rebel against the Monster Empire. Some people may have refer to this city as "the city without courage" as most of the citizens are too scared to go outside. People have thought that Rebel City was used to hide from the Monster Empire, but in reality this place was built by the Monster Empire to use the people living there as experiments without having anyone to alert GEM. Rebel City looks like a wasteland with almost everything in the city have been damaged from demons and other natural disasters. The mayor of the city didn't bother to do anything to fix anything, since