We don't have a biography for Mirror Miles "Smiley" O'Brien yet. Hang in there, or go ahead and contribute one.
Appearances
Star Trek: Deep Space Nine
Guest cast, played by Colm Meaney
- Episode 2x23: Crossover (May 15, 1994)
- Episode 3x19: Through the Looking Glass (Apr 23, 1995)
- Episode 4x20: Shattered Mirror (Apr 22, 1996)
- Episode 7x12: The Emperor's New Cloak (Feb 3, 1999)