Personnel assignment log, Paradise lost 2

W. Dunsel's name was listed on a personnel assignment log

W. Dunsel was a Starfleet officer in the 24th century, who had served under Admiral Leyton.

In 2372, Dunsel was assigned as a Hygienist, Starfleet Dental. The effective date of this assignment was 49274. Dunsel was one of over four hundred officers reassigned in a three week period by Leyton. Dunsel's name was listed in the personnel assignment log that was displayed on a screen in Benjamin Sisko's temporary office in Starfleet Headquarters. (DS9: "Paradise Lost", okudagram)

This character was only mentioned in writing.
Going by their name, Dunsel he might not have been that useful to the plot.