Piersall is a fictional character portrayed by Mark Erickson in the TV series Star Trek: Deep Space Nine.
They appear in 1 episodes out of a total of 173 aired
Episodes1
Second Sight
episode S2.E9 november 1993While noted scientist Gideon Seyetik is preparing for an ambitious project, re-igniting a star, Sisko is intrigued by a woman who keeps disappearing.