"Well guess what!? Now I'm the Queen of Cats!" -Cat Sith

"...n-n-no one...l-l-loves m-me...anymore...n-n-no one does...n-no one....w-w-why...w-why must I be hated...?"- Rosie shortly before becoming Akumatized.

Villain name: Cat Sith

Akumatized Object: Cat Miraculous

Amok Object: Horse Miraculous

Senti-Monster: Diomedes

Senti-Monster Ability: This Senti-Monster has the ability to use Voyage, and will gladly use it to get targets into its rage so it can incinerate them with its fire breath and then devour them.

Ability: Cataclysm has been upgraded, and can now track targets from a range. She also possesses the ability to transform into a Cat nine times, with each time boosting her and Diomedes' abilities, until she can't transform anymore and is stuck in Cat form. She can also steal and devour people's souls, gaining their abilities.

Reason for Akumatization: After an argument with 682, Rosie believed that no one loved her anymore. She used Voyage to get up to the roof, fully intending on taking her own life. But (un)fortunately, the Akuma and Amok got to her first.