Lieutenant Steve Levy is a human science officer aboard the USS Cerritos, notorious among the lower deckers for his crackpot theories about Starfleet history, from Wolf 359 to the Dominion War.
Levy serves in the sciences division of the USS Cerritos under Captain Carol Freeman and is a familiar face in the ship's corridors and bar throughout Star Trek: Lower Decks.
He is best remembered from No Small Parts, the first season finale. Mariner holds him up as a man nobody takes seriously: he insists that the Battle of Wolf 359 was an inside job, that changelings are not real and that the Dominion War never took place.
The gag makes Levy the show's resident conspiracy theorist, a comic reminder that even the 24th century has people who will not believe the official record. He continues to appear among the crew in later seasons.