T'Pera was a holographic Vulcan female created by The Doctor in 2373 to serve as mate for Vorik during his pon farr.
That year, The Doctor brought Vorik into the Paxau Resort holoprogram, which he used as setting for the meeting of the two Vulcans. At first, Vorik was skeptical about the plan, but after a change of heart, appeared to have mated with her, subsequently curing his pon farr. This was actually a ruse; Vorik had pretended to be cured so he could execute his plan to mate with his real desire, B'Elanna Torres. (VOY: "Blood Fever")
T'Pera was played by featured actress Amy Jo Traicoff who received no credit for her appearance.
According to the call sheet, she filmed her scenes on Thursday 24 October 1996 on Paramount Stage 16 and is listed as "1 T'Pera (sc. 46)".