Karen

Karen is Jeanne's version of Bayonetta's demonic ice skates, Odette, and they function exactly the same as them, but like Jeanne's other weapons they are recolored to match her sense of style.

In-Game Description
"'Cursed to dance endlessly, Karen, banished to the icy hell of Cocytus, now finds her soul sealed within Rodin's handiwork. The blades of these skates are able to release incredible cold, giving those skilled in leg techniques frightening power; however, those without the power to fight the curse will find themselves losing control of the skates and dancing endlessly until their death.'"

Trivia

 * Karen is a reference to The Red Shoes, an old fairy tale by Danish poet and author Hans Christian Andersen. In the fairy tale, Karen is a spoiled and vain child who becomes obsessed with her new expensive red shoes, which she obtained through trickery, and she is cursed to dance in them eternally even after death, as a warning to spoiled children everywhere.
 * The LP used to unlock Karen is named after Waldteufel's "Les Patineurs, Op. 183" or "The Skater's Waltz."