>>53749290The line could be fairy/ghost type and the first stage based off of the Kellas Cat
https://en.wikipedia.org/wiki/Kellas_cat>Thought to be mythological until a gamekeeper caught one in 1984>Hybrid between a wildcat and a domestic cat>Possible inspiration for the Cat-sìth, a fairy creature from Celtic mythologyThe article even has a link to Phantom cats, big cats that are in regions where they aren't supposed to be, which could also lean into the fairy typing for the cougar Pokemon.
Alternatively cougars are also known as mountain lions, so you could have the line be rock type with the wildcat being smooth, but it gets rockier and more broken up as it evolves and gets wilder, like a geode that's been cracked open and showing its crystalline structure inside.
