Contrary to her appearance as a nun, Sister is a rude, coarse, foul-mouthed tomboy. She's also quite brazen, saying and doing inappropriate things. In spite of her harsh and bullying attitude, however, Sister is compassionate and considers her crewmates to be like members of her family. She's capable of showing mercy to her enemies as well, provided that they are in need of her services, or if she believes their lives are already at risk. She's a machine