A character who has two or more different personas with clear personality differences. Split Personality is a subtrope, where one of those personas has a mind of its own, and may even be hostile to their "host". May become afflicted with psychological dilemmas like Double Consciousness and, in case at least one of the extra personas is not known to be connect to the other(s) by the general public, Secret Identity Identity.
- Certain interpretations of Superman's character, with the personas comprising (throughout his history, and usually not all four at once): "Superman, the Super Hero", "Clark Kent, the Intrepid Reporter", "Kal-El, the Last Kryptonian", and "Smallville Clark".
- The Rumble Roses characters' switching from being good Faces into evil Heels (and vice versa).
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