James Greene is a character actor whose brief yet memorable appearance in Star Trek: The Next Generation showcased his ability to bring depth to smaller roles. He played the enigmatic Captain Genealogy in the episode "Who Watches the Watchers," where Captain Picard and the crew of the Enterprise-D navigate delicate first contact protocols with a primitive civilization. Greene’s performance added gravitas to the moral questions posed in the story, complementing Patrick Stewart’s Picard and writer Michael Piller’s thoughtful script. Though Greene is better known outside Star Trek for stage and television work, including roles in series like Law & Order, his contribution to this TNG episode remains a standout for fans interested in the ethics and philosophy often explored in the franchise. His work in “Who Watches the Watchers” provides one of the series’ more nuanced examinations of observation and interference.