Una/MU

Una is a fictional alien medic and a supporting character featured in comic books published by Marvel Comics. She is associated with the Captain Marvel line of titles in the mainstream Marvel Universe and first appeared in Marvel Super-Heroes #12 in December, 1967.

Overview
Una was a member of the White-skinned race of the Kree species. She worked in the Kree military as a medic under the command of Yon-Rogg aboard the ship the Helion. During her service, she became the lover of fellow Kree, Mar-Vell. Una lost her life when she was caught in the crossfire between Yon-Rogg's troops and an Aakon warrior. Mar-Vell was tormented by this loss, and blamed Yon-Rogg for her death.