Jamie Madrox
In Peter David's "X-Factor" (vol.3), The former ghetto was the base of operations for X-Factor Investigations, who frequently dealt with the aftermath of the Decimation and its effects on the local community. In the Civil War storyline, Jamie Madrox and his team declared 'Mutant Town' as a sanctuary for superheroes being pursued by the government. This brought them into conflict with the regular X-Men team, who eventually allowed them to have their way.