Little Red Riding Hood (Rougarou Wendy)

I haven't tested this deck but I Just wanted to point out that Curse of the Rougarou & Monstrous Transformation are both pretty nice in a Wendy deck.

The -1 to intellect isn't a huge deal for her but the +4 to combat and the +1 to Agility are a huge boon, that and Peter Sylvester can handle the horror that drips in from the curse. Chances are if you're playing Rougarou in a campaign you'll also have some experience to spend, so I would recommend the upgraded version of Peter to buff up your willpower a bit, since that's probably the most painful stat to lose when you transform.

I haven't really thought about the other investigators but off the top of my head, she's probably the one who can benefit the most from Monstrous Transformation.

You might want to cut out backstab, it's in there because it can help while you're waiting to transform, and once you have Transformation + Peter out on the table it can be a slightly stronger attack, but if you wanna cut something that's probably a good choice.