Vlu was a Cardassian female doctor.

In 2376, Vlu worked with the crew of Deep Space 9 during the parasite crisis on the station and Bajor. Vlu received a Starfleet commendation for her work in the crisis as well as the affections of Sam Bowers. (DS9 novel: Unity)

Around a week later, Vlu joined Ezri Dax, Julian Bashir, Ro Laren and Taran'atar in a mission to Minos Korva to investigate if any more of the parasites were living there. Vlu later returned to Deep Space 9 aboard the USS Nile. (DS9 - Worlds of Star Trek: Deep Space Nine novel: Trill: Unjoined)