Kalara

Kalara, formerly Jessica Wolff, was a Human female who served as an Federation Starfleet officer until she was stranded on the planet Altamid. Wolff became the alien Kalara after the use of energy transference technology severely mutated her body.

Early career
Wolff served as a Starfleet officer during the 22nd century serving onboard the USS Franklin. In 2164, the Franklin was displaced by a wormhole while inside the Gagarin Radiation Belt. The ship crashed on the distant planet Altamid, with Captain Balthazar Edison, Anderson Le and herself as the only survivors. 

Becoming Kalara
On Altamid, Edison, Le and Wolff found technology left behind by a previous civilization, including Swarm ships, a drone workforce, and an energy transference process that allowed her to "drain" other individuals to prolong her own life. Using their newly acquired Swarm, Edison, Le, and Wolff captured scores of alien ships and drained their crews to survive, which also mutated their biology to resemble that of their victims. In time Wolff became "Kalara", suppressing much of her Human identity and ceasing to speak in English. 

Searching for the Abronath
In 2263 of an alternate reality, Kalara was sent by Krall to the Federation Starbase Yorktown to pose as an alien in distress in order to lure the USS Enterprise (alternate reality) to Altamid where it was attacked by Krall's forces. Surviving the destruction of the Enterprise aboard a Kelvin pod, Kalara joined Captain and Ensign  on the surface of Altamid. Boarding the wreckage of the Enterprise's primary hull, Kalara hoped Kirk and Chekov would lead her to the artifact and super weapon Abronath, but was tricked by Kirk into sending a communications signal to Krall, thereby exposing his location on the planet.

Reinforced by several Swarm soldiers, Kalara engaged Kirk and Chekov in a firefight, but was waylaid by the Starfleet officers when they engaged the crippled Enterprise's thrusters and escaped back to the surface of Altamid. Managing to exit the ship herself, Kalara gave pursuit but was killed when the Enterprise saucer section, propelled by the firing thrusters, flipped and crushed her.