Union City is located on Earth and is the capital city of the Terran Union.

“Founded in the 2070s during the Chinese Economic Collapse by several corporation that merged to form the Hong Kong-Guangzhou Union Consortium, Union City is currently the capital of the Terran Union and its people know it. Whether it's fashion, entertainment, education, wealth or technology, Union City has it bigger and better than everywhere else. Divided into several districts, Union City sprawls through the Canton Region, the wealthiest founders in the union rub shoulders with the poorest indents, senators and slum dwellers share the same streets and everyone rich and poor knows that Union City is the greatest place in the Union. The Union Agencies maintain a firm grip, though rumor has it that some areas of Union City are so rough full TDC divisions fear to tread there.”