Sidekick City (9/6)

(this puzzle was a collaborative effort between S. Matt Read and Brooke H. Stanley, Jr., copyright 2005, all rights reserved)

Think of a North American city.

The first four letters is a sidekick from the Golden Age of comic books. Then remove the third and fourth letters to get another sidekick from the Golden Age. Then the removed letters can become the first and second letters to yet another sidekick from the Golden Age of comics.

What's the city and who are the three sidekicks?


Click here for the answers!