Once a fox treatling, her former self was shed when she decided to transition and gain a new form: that of a witch treatling. Breaking free from who she used to be, she decided to serve the Treatling Queen as a premier alchemist, but did not gain her favor. After she was turned into a treat, she wandered for a while, getting up to mischief. At some point, Cirrus managed to find her after she sustained an injury and through lots of love and care, restored her true form. She decided to "take over" Cirrus's nightmare kingdom in the name of the Queen, but found that they were more than willing to submit to her-- believing her to be the dream woman they encountered in their nightmare that they thought they had lost forever. Caterina, thankful for their devoted nature, has a crush on them, something that will only ever be confessed when pressured enough.