An Idanian operative who comes to Deep Space 9 in 2373 carrying a data crystal for the woman known as Arissa, and is murdered by Draim's assassins before he can deliver it.
Tauvid Rem is an Idanian who appears at the start of the Deep Space Nine episode A Simple Investigation. He arrives on the station to meet Arissa and hand over a data crystal, but two hired killers working for the Orion Syndicate boss Draim, Traidy and Sorm, corner him in his quarters first.
When he refuses to give up the crystal, the pair kill him with a device that leaves almost nothing of the body behind. His disappearance is what brings Odo into the case and into contact with Arissa.
Only later does Odo learn that Tauvid Rem was an agent of the Idanian intelligence service, and that the crystal held the stored memories of Arissa's real identity as an undercover operative.