Overgrown Puppy

(Crossposted From Ao3)

During a fight, Izuku is hit with a quirk that turns him into a giant feral Wolfman meant to be used against the other heroes he's fighting with. Little did the heroes know that they had nothing to fear.

After the horrific sight of Prohero Deku changing and growing to a height of eight feet villain with muscles more akin to All Might in his glory days than the brick house that was Izuku Midoriya, the villain pointed a clawed finger at the heroes and gave the command "Attack!"

The proheroes prepared for Izuku to attack, waiting for those familiar green lightning scattering around his body. Nobody was prepared for him to look around with a confused expression before charging at Katsuki with something akin to his usual waterworks. The villain was quickly apprehended while Katsuki dealt with the overgrown puppy clinging to him and whining.