Central City (Archie)

Central City is a city-state and the capital city of the United Federation located in Eurish. It is also the location of the Guardian Units of the Nation Headquarters.

Battle of Central City
Dr. Eggman and his forces attacked Central City hoping to find the traitor, Snively Robotnik. Employing the Egg 'Stache Flyer, Egg Swats and Egg Camels, the doctor and his forces attacked the United Federation's capital in search of his treacherous lackey. G.U.N. retaliated with E-123 Omega leading a squad to fight against the Eggman Empire, while Shadow the Hedgehog and Rouge the Bat went to protect the President. Omega winded up fighting against Mecha Sally, Metal Sonic, and the Egg Paladins (the legionized soldiers of G.U.N.'s Paladin Team Sigma-Alpha 2). Eventually, Snively escaped, which caused Eggman to go after him. The empire made a retreat and left the city.

In a New World
After Mobius was reset by the second Genesis Wave, Sonic the Hedgehog recruited the Chaotix (made up in this world of only Vector, Charmy and Espio) to help search for Tails, Knuckles the Echidna, and Amy Rose who had mysteriously disappeared. The Chaotix chose to search the streets of Central City, where they where attacked and captured by Copy Robot, before being turned into Roboticized Masters.

Trivia

 * Central City is a location used prominently in the next-gen Sonic games. It first appeared in Sonic Adventure 2. It also appeared in Sonic Battle, Shadow the Hedgehog and Sonic Chronicles: The Dark Brotherhood, but wasn't named until Sonic Battle. Sonic Battle indicates that the city is located on South Island; while this was apparently untrue prior to the Super Genesis Wave, it is possible that it is now found there on the altered Mobius.
 * In the DC Universe, there is a city named Central City, which is home to Barry Allen, the second Flash.