(I was watching Creeped Out with my friend and I figured this could be a cool villain quirk)

The user can consume negative emotions, especially ones of hatred and displeasure, and turn them into raw energy for their body to use as fulfilment. This means they don't have to consume any normal food or drink, and instead can gain massive levels of stamina, willpower, energy and endurance through feeding on other's anger, sadness, disgust or general discomfort. They can also smell these negative emotions quite easily, in the same way a person can smell food if it has a strong enough smell. The user need only be in a close vicinity of someone who is acting on their negativity, whether through actions or words, for their quirk to work.

Quirk Type - Transformation (These kinds of quirks usually refer to physical transformations like Kirishima or Kendo have, but technically this transforms anger into energy, so you could still class it as Emitter if you prefer but this is how I'd label it)

Best suited for - N/A (I genuinely haven't got a clue, this quirk really only benefits the user?? Doesn't do much good for anyone else)

Drawbacks - The user's body will always reject actual food and drink, so the absorption of negativity is a requirement for them. Without it, they'll constantly be in a drained, weak state where they always feel like they're being starved.

Possible Hero/Villain names -

Anger Feeder (Basic but honest)
Lady Negative (Sounds like a vampire tbh 💀)
Soul Sucker (Not necessarily drinking souls but they're basically consuming something emotional from inside their target, so it works)