Nina Stack

Nina Stack is the commander of Moon Base Alpha, also known as the MBC. She typically does not show any emotion and is very strict, so many younger Moonies refer to her as Nina the Machina behind her back. Nina lives in Residence 1, the largest residence and only one with a window. She has a hard exterior but has a teddy bear and a close personal connection with her mother. Nina was also once mentioned to have come from the military.

Personality
Nina mostly does not show any emotion. She is very strict she also tries to make sure everyone follows the rules, and is very principled. In Spaced Out, Dash states that she is called Nina the Machina because she had "the same range of emotions as a kitchen appliance: none." Kira also says once that Nina is seen as the "ultimate goody-two shoes." However, Nina is willing to break rules to help those she deeply cares about, shown when she revealed she illegally collected moon rocks to get money needed to help her sick mother. While collecting the moon rocks, she realized her visor was cracked and hid in the lava tube below MBA. When Dashiell and Chang rescued her, she was willing to do things her way, and explained why she was there. She said that she did not deserve her position, although she got to keep it in the end.

When she walked all the way back by herself, she instructed everyone to get back to work. Kira said that Nina was a party pooper.

Trivia

 * Nina is often called "Nina the Machina" by younger Moonies
 * She is so organized and clean that Dash once saw her speck invisible dust motes off her clothes.