Rekan'ganar was a Jem'Hadar who was under the command of Vannis. In 2376, Rekan'ganar joined Vannis to study the crash site of an Ascendant starship on the Sen Ennis moon several years earlier, based on information from Odo. (DS9 - Worlds of Star Trek: Deep Space Nine novel: The Dominion: Olympus Descending)