Yuki Mori: initially Dr. Sado's nurse, Yuki gained the additional responsibilities aboard Yamato of operating the radar, performing computer calculations, taking care of the crew's morale and searching planets for food sources. She is from the outset attracted to Kodai, but conceals her true feelings with girlish glee. As the only significant female crewmember, she is also frequently the victim of fan service. Her Japanese name means "forest snow", creator Matsumoto being fond of female characters with "Yuki" (snow) as part of their name.
Source from Wikipeida