Kessil was a Denobulan woman, alive during the 22nd century.

In the 2140s she lived with her husband Groznik on Denobula, the Denobulan homeworld, until the early 2150s, when she decided to leave Groznik for her third husband, Bogga, and live with him on Teerza Prime.

Phlox and Feezal, friends of the family, mentioned her and her relationship with her husbands in 2152 while they were catching up on old acquaintances. (ENT: "Stigma")