Keiko Ishikawa-O'Brien Status: Civilian. Botanist. Teacher Actress: Rosalind Chao Race: Human Background: Wife of Chief MilesO'Brien. Has a daughter Molly and a son Kirayoshi. Episodes: A Man Alone If Wishes Were Horses In the Hands of the Prophets The Siege Cardassians Rivals Armageddon Game Whispers Tribunal The House of Quark Fascination Accession Hard Time Body Parts Looking for Par'Mach in All the Wrong Places The Assignment The Begotten Time's Orphan What You Leave Behind