A junior Federation Forces officer, who becomes acting captain of the training ship Space Ark once all the vessel's senior officers leave to fight the Crossbone Vanguard. It's Leahlee who gives the F91 Gundam its name, as an homage to the legendary mobile suits of years past. Her top priority is to get the Space Ark, and its cargo of civilian refugees, safely out of the Frontier I space colony before they can be dragged into the destructive conflict.