A Cat miraculous hero concept! Based on Irina Clockworker, from the evillious chronicles! This is kinda like a crossover.
I’m working with the assumption that the evillious chronicles is a piece of media in the Miraculous world. One that the hero knows, and is intentionally working with.
When transformed, this hero has his consciousness separated from his body. Inside of a doll that looks like a cat. They puppeteer their transformed body from the cat doll. The ring also is inside the cat doll. This gives them immunity, or other nuanced reactions, to many form of hypnosis and mind control.
They can also puppeteer other bodies, but only when on top of them, and one at a time. People can resist this, and Akuma Villains and Miraculous Usere have much stronger resistance to it. So it will take longer to take control of one.
Their body is not as fast or strong as other miraculous users generally are. But in exchange they have magic. All magic from the Evillious Chronicles that isn’t specific to one person is fair game. Wind magic, Ice Magic, acceleration glyphs, calling to forest animals for help. And of course, fire. And anything else you want. They can cast the clockwork secret art, but not on their own.
The knowledge on how to use these spells is in the cat plush. So if someone else takes control of only the body, they can’t use them.
Optionally: Using other Miraculi, they can enchant normal thematic objects into the vessels of deadly sin. Each vessel has a different Miraculous it can be created with. The vessels of deadly sin can empower normal civilians, with powers that fit the corresponding demon. Giving these out is more permanent than giving Miraculi, as taking these away has no effect. The only way to take the powers from a contractor is to kill them. Either with a vessel, or by another contractor. They are resistant to mind control and hypnotism. They will not regain their powers upon being killed and brought back to life, even with the miracle cure.