Mobians have established various nations across their planet, including the city of Mobotropolis on Westside Island and the underwater kingdom of Meropis. Additionally, a number of Mobians came to share the United Federation the humans and some a dozen mobian nations joined the United Federation after it was formed Unfortunately, all Mobians came under threat with the rise of the villainous Dr. Eggman, who set out to dominate the planet and establish his Eggman Empire. (StH: #252, #257, #260, FCBD: 2014)