Izuku has one of the most unconventional quirks. Goose.

Specifically a Canadian Goose.

No he’s not a heteromorph, and no it doesn’t have any special abilities, other than being seemingly immortal.

At 4 years old, Izuku came home with a little goose that refused to leave his side.

This goose was crazy protective of him, even growing up alongside him.

Where people learned it was a quirk was during one particularly cruel instance of bullying from Bakugo, the goose went crazy and attacked him.

In the subsequent struggle, Bakugo ended up exploding its head, killing it.

As everyone calmed down, however, the goose suddenly came back to life, its head completely recovered, and hissed as it rushed Bakugo again, though Izuku was able to grab and hold it back.

As it turns out, this goose is Izuku’s quirk. Besides being his closest companion, it’s also his greatest protector, fearing no one, even going crazy when the slime villain attacked.

It’s no more intelligent or strong, or less aggressive than any normal goose, and even still needs to eat.

It’s only exclusively sweet, even playful with Izuku, glaring and hissing at anyone who so much as makes him uncomfortable.

OfA turns it into a mega goose. It’s exactly as terrifying as it sounds.