Jena Noi was a dark-skinned (with a hint of green), dark-haired, golden-eyed woman of mixed species ancestry from the late 31st century. Several of the species to which her respective ancestors belonged were unknown to the Federation in the late 24th century, though her ears were described as resembling those of the Ocampa.

Noi was a Federation Temporal Agent and often recruited Federation Department of Temporal Investigations agent Gariff Lucsly for missions in the late 24th century. Throughout their interactions, an attraction between herself and Lucsly was hinted at, culminating in a passionate kiss between the two.

She had a strong dislike for Commander Juel Ducane, a Starfleet officer from the 29th century and the first officer of the timeship Relativity, which appeared to be mutual. (DTI novel: Watching the Clock)