My Hero Academia: Wendigo

Quirk Name: Wendigo

User: Izuku Midoriya

Quirk Type: Mutant / Transformation / Emitter Hybrid

Classification: SSS-Class, Emotion-Triggered Transformation

Unlike most transformation quirks, Izuku's quirk doesn't allow him to transform at will. He doesn't even know that he possesses a transformation ability.

From childhood, Izuku believes he simply has an unusually powerful body. He's stronger, faster, and more durable than other children, even without training. Doctors initially classify his quirk as a physical enhancement-type quirk.

But that's only the surface.

Deep inside Izuku's body exists something ancient, something that awakens when his emotions become too overwhelming to contain.
Something that doesn't understand the meaning of mercy.
Something that doesn't know the difference between a threat and an enemy.

Something that only knows one thing.

Protect. Hunt. Consume. Survive.

And when Izuku finally loses control of his emotions, the Wendigo awakens.

(Like in all some stories, I will be focused on izuku so if you want the other added too, go watch the anime)