1997 - Brazilian authorities, after an anti-mutant conservative Catholic uprising, report an upsurge in mutant disappearances. Fearing vigilante attacks might have killed them, they call on international law enforcement for assistance in solving the cases. This investigation reveals that the mutants who disappeared voluntarily left their previous lives through a "Mutant Underground". None were ever found and no arrests were ever made.
1998 - After Sweden passes a mutant registration law (set to expire in 2003 unless renewed), several known mutants disappear. One is located in Japan living under another name, but refuses to answer questions about the Underground.
1999 - The mutant.underground website first appears on the Internet. It states that its purpose is to "become obsolete" and that the Mutant Underground exists to help mutants escape oppressive and potentially oppressive social and political conditions to a new life elsewhere. There is no valid contact information. "we will find you", the webpage concludes. (There are also no capital letters on the page.)
2001 - The FBI reports that fugitive mutants James Hurbart and Kris Snyder have likely entered the Mutant Underground and evaded investigation and arrest by Justice Force. Hurbart and Snyder were under felony indictment in Nevada when they disappeared.