Cadet Gaila was a female 23rd century Orion individual who was an upper-class student at Starfleet Academy in 2258, in an alternate reality. She had an intimate relationship with James T. Kirk.
Gaila was one of a number of cadets who were pressed into as service Starfleet officers by an emergency order from Admiral Richard Barnett during the crisis in the Vulcan system. (TOS movie & novelization: Star Trek)
- In the prime reality, TOS - Legion of Super-Heroes comic: "Issue 3" referenced Nyota Uhura's roommate also being an Orion girl. Presuming Uhura's life was approximately parallel to that reality, there is a good possibility that the unnamed roommate referred to was a prime reality counterpart to Gaila.