- See Pierson for other articles with titles that contain, either by relationship or by coincidence, this character's surname.
Pierson attended the wedding of Becky Randall and Tom Markham. That evening, she and James T. Kirk had a dinner date in her quarters, but it was interrupted by malevolent telepathic broadcasts. Faron and Nadira manipulated the crew into a gender war, with Pierson joining the women's side. At one point, Pierson and Lieutenant Sinclair aimed phasers at James T. Kirk and Spock, but Kirk was able to temporarily break through to them, and they stunned the women behind them instead.