The Ocampa mother of Kes, seen giving birth to her daughter in the underground city when Kes's life runs in reverse.
Martis is an Ocampa woman of the underground city and the mother of Kes. She appears in the third-season Voyager episode Before and After.
In that story Kes finds herself moving backwards through time from her own deathbed, the result of chroniton particles picked up in an alternate future. After reliving her years on Voyager and her childhood, she arrives at the moment of her birth and sees her mother with her father, Benaren, at her side.
Because Ocampa women normally bear only one child, Kes is very probably Martis's only offspring. Kes names her own daughter Linnis in the alternate timeline, and little else is established about her mother.