Fontana was a Human woman. A Starfleet officer, Fontana served on Deep Space 9 as a Lieutenant.
After the USS Defiant was disabled and damaged by a Calderisi raider, Lieutenant Fontana assisted Miles O'Brien in repairs. She was particularly pleased when Benjamin Sisko told O'Brien to rest after long hours of repair work with no breaks, leaving him irascible and quick tempered. Fontana joked to Sisko she would remember him in her will for getting the chief to take a break while she continued with her own repair work. (DS9 novel: Objective: Bajor)
- Lieutenant Fontana was likely the mother of Ashley Fontana, another character created by the same author.