Rinslet Laurenfrost is Claire's childhood friend and self-proclaimed rival. She is a member of Team Scarlet and also under to the infamous "Raven Class." She is an elementalist using the ice wolf spirit Fenrir. In a weapon mode, her contract spirit transforms into a bow that fires freezing arrows.

She is famously called "Ice Demon Rinset," but for some reason she also has a reputation of being called a "Backwater Noble" which is a derogatory title that she resents very much. Though she is Clair's childhood friend, they don't see eye-to-eye. When they compete fiercely with one another, Rinslet often refers to Clair as a "Stupid Dog."