So a few weeks ago I started talking about a monster type I made called the Edere Vir. Originally envisioned as a part of the World of Darkness, they were humans that preyed on other humans for power and advantage within society. I'm still turning the idea over.
As a WoD monster, there'd be a point value assigned to each body part which they could use to power their abilities. Eyes would cost something like one, legs would cost four, etc. An Edere Vir would only be able to store 10 or so points as a starting character unless they got a meta power.
Like with mage, the powers would have to be free-from and additional dots in them would imply a greater range, reliability, or general efficiency. Unlike Mage, they'd have a narrower focus, falling into only four rough categories: self-enhancement, jinxing, meta, and technology manipulation.
Self-enhancement would include things like manipulating their own stats; improving their vision with eyes, hearing with ears, etc. Jinxing would include manipulating or sabotaging others, making someone affectionate by using a heart. Meta would improve the general efficiency, storage capacity, feeding speed, regeneration costs for the Edere Vir. Finally, technology would cover things like spoofing voices over a phone line, vanishing behind glass, and fooling tests.
They all get an aggravated bite attack that only works against humans because animal Edere Vir don't work so well for a World of Darkness setting. Edere Vir werewolves, changelings, mages, and wraiths are all possibilities, depending on your story.