Alison was a Starfleet crewman serving aboard the Enterprise NX-01 as an engineer during its historic mission of exploration.
In 2152, while she was trapped in an elaborate, transporter-induced illusion, Hoshi Sato passed Alison in a corridor and greeted her, but received no response. (ENT: "Vanishing Point")
Alison was played by Carly Thomas.
As evidenced by the final draft script of "Vanishing Point", this character was at one time intended to be a male whose surname was "Rhodes".