Drysi Gravenor was a female Human Starfleet Special Operations officer serving in the early 24th century and often thought of a mentor by Elias Vaughn. She was raised in Wales on Earth and was short and petite with straight dark hair. She stood at about 1.5 meters.
In 2311, she held the rank of commander and was part of the team responsible for capturing the Romulan flagship IRW Tomed. She was responsible for stealing the cloaking device from Tomed and installing it on the shuttle Liss Riehn. (ST - The Lost Era novel: Serpents Among the Ruins)
In 2383, Gravenor was one of the many people who visited the Vanadwan Monastery hospice on Bajor to see Vaughn before he died. Gravenor had travelled from Alpha Centauri. (Typhon Pact novel: Raise the Dawn)