The Eggman Empire is a technology-based empire ruled by Dr. Eggman that seeks to lay claim to the entire planet. It has claimed parts of the world through the might of its Egg Army and Badnik Horde, as well as the advanced technology created by Eggman and his underlings. However, the empire faces continued opposition in the form of nations such as the Kingdom of Acorn, Avalon, and the United Federation, as well as in small groups of Freedom Fighters, the most notable being led by Sonic the Hedgehog.