{Warning- I am no expert in Korean Myth- forgive me if I'm wrong about anything}
In Korean Myth Kumihos are 9-tailed spirit foxes who hang around graveyards to feast upon the hearts and livers of dead people.
Kumiho Cookie is a fox with a singular tail that seduces all kinds of creatures and drives me crazy.
Since Devsisters is a Korean company I thought it was odd they didn't make Kumiho cookie like the myth. I think I know why they did this.
I don't think universal censorship would allow an accurate Kumiho cookie in the game since Cookie Run Kingdom's primary audience is 13 and up. Ovenbreak is for ages 4 and up. Internet censorship is very harsh to the devs did what they did.
It may have been a bit worse since Kumiho cookie is implied to be a pedo in her voice lines since she dosen't seem to have an age limit towards her victims. Also her acting like a siren is a bit creepy so yeah.
My intense hatred for this cookie is because censorship and age restrictions stopped what would have been an awesome cookie from being created. Just think about how cool she could have been. Her charge skill would be so epic
Note that the OB Kumiho is pretty accurate if you ask me mainly because her trial is in a graveyard and she has the spirit fox bead as her pet.