Here are the Withereds' designs, these being after they have escaped from the hands of the Toys and healed from their physical wounds. That's why we call them (un)Withered.

Mangle has a gray cat, inspired by her design that has an extra head on her endoskeleton. I thought it would be cute to have that.

Here, in this universe, Puppet is called Smile, who is a happy marionette. (perhaps in contrast to someone?)
And last but not least, Shadow Freddy, who we called Shaddy.

Btw, the Unwithereds are different characters from the FNAF1 characters.

---------------------------------------------------------------------------------

Design:

Toy Chica, Mangle, JJ, (un)Withered Freddy, (un)Withered Chica - me

Toy Freddy, Toy Bonnie, Balloon Boy, The Puppet, RXQ, Shadow Freddy, (un)Withered Foxy, (un)Withered Bonnie - @Ting-SWEET