Debbie David appears in Star Trek primarily as an actress, remembered for her role in The Next Generation episode Yesterday’s Enterprise. In this gripping alternate timeline story, she plays Ensign Cavit, a part of the Enterprise crew navigating the tense shift following the arrival of the older Enterprise-C. Her performance adds to the intricate dynamic alongside Captain Picard and key characters such as Tasha Yar and Guinan. David also appears in the Star Trek: Deep Space Nine episode Allegiance, contributing to the show's complex ensemble during a time when Captain Sisko faces challenges to loyalty and trust. While not widely known outside Star Trek, her work in these episodes is a neat touchpoint for fans exploring pivotal moments in the franchise’s 1990s era.