In the parallel universe, known as Earth-One, the Mirror World was another dimension of the universe. One could be transported there by being reflected through several mirrors positioned at particular angles from one another.
The Mirror World was home to a city inhabited by 'Orinocas', a race of telepathic warlike women.
- First Earth-One Appearance:
- The Flash, #126 (February 1962)
- ↑ As seen in the Season 8 episode: Reflections in Crime (September 15, 1984).
- ↑ As revealed in The Flash, #126 (February 1962).