Two Aliases, One Character/Playing With

Basic Trope: Two separate characters were revealed to be the same person.
 * Straight: Alex and Emperor Evulz were the same person all along.
 * Exaggerated: So is Lord Bad, C.C. Executive, Bob, Charlie...
 * Justified: Alex did not want to let people know he's actually the Big Bad, so he created an alias called "Emperor Evulz".
 * Inverted: Diane and Laura are two different people, yet they use the same alias, "X-Girl".
 * Subverted: Alex and Emperor Evulz are two different people, and the former is The Starscream to the latter.
 * Double Subverted: Alex kills Emperor Evulz and takes on his identity.
 * Parodied: ???
 * Zig Zagged: ???
 * Averted: ???
 * Enforced: ???
 * Lampshaded: ???
 * Invoked: ???
 * Exploited: ???
 * Defied: ???
 * Discussed: ???
 * Conversed: ???