Knight Christine Royce is an ex-Brotherhood of Steel scribe and an operative of the Circle of Steel, and one of the three companions in the Fallout: New Vegas add-on Dead Money. She also makes a brief appearance in the Fallout: New Vegas add-on Old World Blues, in the form of voice recordings.

She is the estranged partner of Veronica Santangelo, which plays a part in her determination to hunt down Elder Elijah. The two were in a lesbian relationship, which was heavily implied to be broken up.