|Season||Guardian Angels Of The Stars|
Onyx possesses the power to create the corrupted monsters, which were created by Brek and are known as Decxious'. The - were created to destroy the colorful and illuminated power of the eight Angels Of the Sky. Throughout the story, Onyx gains new powers, which allow her to steal one person's basic abilities, like she stole Rikka's voice in episode 57. She also holds the power to create powerful energy balls, which she uses during her fights against the Guardian Angels. Adding to her basic magical abilities, Onyx also has the power to release her true potential, which is known as True Color of Onyx (オニキスの正体?).
- Despite Onyx being the first of Brek's allies to be "created", Onyx is not counted as one of the marionettes.
- This my be because Onyx is a different kind of marionette, known as Magionette.