Ghouls and Parts

When it came to make ghouls, I had a variety of ideas running through my head. The prominent unifying factor was that they all wanted to feed on human flesh whether dead or alive. The problem is that there isn't a unifying characteristic beside the unifying action. Obviously, I took inspiration from Lovecraft but also from an action/horror manga called Tokyo Ghoul. The protagonist turns into a ghoul after receiving an organ implant from the same ghoul that tried to eat him. This irony leads him to ghoul society and further adventures. Besides the desire for flesh, the ghouls have strange eyes, red I think, iron-like skin, super agility and a pair of tentacles that leap out of their back. Depending on what type they are, the tentacles come out of different spots on the back and in different forms. 

But that's my issue, there's plenty to unifying these ghouls despite the differences. I should have been more selective with my categorization of my own ghouls. My ghouls vary wildly from each other to the point they're almost different species. My standard ghouls can transform into to the classic beasts that Lovecraft once drew. I wanted to keep a piece of his work in my own. My second ones follow the Tokyo Ghoul path with their ability to extend their spine and use it like a whip. I canceled the fire ghouls if you see my earlier notes. Then there was my favorite, the zipper ghouls who can open a mouth anywhere on their body. Finally, I have these part ghouls that use remains to grafts parts into themselves. I added in a little Reanimator story to my idea because I wasn't sure where else to add it to my world. So now I'm mixing and matching ghouls with other aspects when there should be a more uniting attribute. It's frustrating to see your work grow out of control. I think the final two species will have to be more unifying, similar to how mountain wolves and grey wolves are the same species but dofferent...I don't know...type? Right now, mine are different as a pug is from a wolf. And it's not like there's plenty of Eldritch monsters to pull from. Maybe Tokyo Ghoul had a bigger than expected impact because I wanted a human/monster element. 

Maybe it's how hunger manifests. That could be the unifying factor.