+An alter ego is a secondary [Self](/wiki/self), a distinct personality often hidden or unrevealed to the world. It can represent a person's true [Identity](/wiki/identity) or a character they assume, sometimes embodying qualities opposite to their usual demeanor.
+## See also
+- [Persona](/wiki/persona)
+- [Doppelgänger](/wiki/doppelganger)
+- [Psychology](/wiki/psychology)