Kate was abandoned by her parents, and lived on the street. Compared to Mel Glover, she feels like a failure. She has the power to transcend time and has also performed 'The Forbidden Summon', which was a summon that called upon a creature that would devour all light in the world. She and Mel had the same master, and she often comments about Mel's personality saying things like he doesn't act like his age, and that he's more of an old man because he shrugs off everything. MC (Icy) says that Kate reminds her of a spunky older sister. 

Voice: Medium to deep pitch, tomboyish or big sister sounding. Also open to your interpretation.