Lucsly was a member of the Department of Temporal Investigations in the 24th century. In 2373, along with his partner, Dulmur, he visited station Deep Space 9 to debrief Benjamin Sisko on a recent time travel incident, wherein Klingon spy Arne Darvin utilized the Orb of Time to take the USS Defiant back in time to 2268 in an attempt to assassinate James T. Kirk. Lucsly appeared to be humorless, as did Dulmur; indeed, both said they hated jokes.