Darcy Lewis is a research assistant who works for Jane Foster. Known for her acerbic demeanor, she assists Foster with her investigation of atmospheric phenomena and becomes embroiled in the adventure when Thor is exiled to Earth. Lewis' pragmatic witticisms often annoy her companions, but her insights often help them when their scientific analysis of the situation fails. Lewis gained her research position despite the fact that has no scientific background. She is a political science major and was the only person to apply for the job. She is very quick to state that risking her life on Foster's research is not worth the six college credits she is getting in return for her assistance.