T'Laya.
In the Kelvin timeline, T'Laya was a 23rd century cadet at Starfleet Academy in the 2250s decade. Although T'Laya joined Starfleet as a Vulcan, she was in fact a Romulan agent. She was a classmate of James T. Kirk.
Biography[]
To cover for her lack of the characteristic Vulcan logic training, T'Laya claimed to have had an unusual background that made her much more emotionally open than most Vulcans. (TOS - SA novel: The Gemini Agent)