Dana Scully is an FBI special agent, a medical doctor, and scientist who is Mulder’s partner. In contrast to his credulity, Scully is a skeptic, basing her beliefs on scientific explanations.
However, despite her otherwise rigid skepticism, she is a Catholic, and her faith plays an important role in several episodes. As Scully works along side Mulder, she becomes more open to the possibility of paranormal happenings.