Kira Morgan is a Marine commander and one of the three possible characters to choose from in Doom II RPG.
Kira is a the major of a the marine team who are commissioned to investigate the UAC base on the Moon. Sergeant Stan Blazkowicz was her deputy in the team. In order to quickly reach the Moon, a ship of the rookie scientist Riley O'Connor was commandeered by the Marines. The Scientist was not a planned member of the expedition. They reached the Moon along with the rookie scientist sent to the installation of UAC on the Moon where invasion had occurred by demons from Hell. She, Sergeant Blazkowicz and Dr. O'Connor try to trace the origin of the invasion and find a way of stopping it.
Depending on which character you choose, the other two come with Caldex to participate in their own way through the base.