Ryo Inui

Ryo's Quirk, Dog, has shaped him into something close to a canine outright. A shaggy blond mane juts straight backward from his head, and his face tapers into a mildly pointed snout, over which he straps a muzzle in costume. At 196 centimeters he towers over the students he supervises.

Anger scrambles his speech. What leaves his mouth in those moments arrives as fragments of words tangled with growling, enough to frighten the student body into line, a reputation he embraces rather than corrects. His Ultra Analysis profile pins him as a workaholic, and his roughness reads less as hostility than as an overexcited dog showing affection, as when he tossed Izuku Midoriya into the air and told him to enjoy the festival. His Volume 14 profile lists drinks with dinner and soccer among his favorite things.

He first appears among the U.A. teachers who rush the Unforeseen Simulation Joint to back up Class 1-A and All Might once the League of Villains attacks. At the second term's opening ceremony he speaks last as head of student discipline, only for his temper to reduce the address to garbled words and growls capped by a howl that unnerves the students; Vlad King, with whom he gets along well, takes the microphone and restates what Ryo meant to say while Ryo stalks off sulking.

He and Ectoplasm draw the security assignment for the U.A. School Festival. He spends the night before shouting at Class 1-A to sleep, then catches the scent of intruders once the event opens and moves out with a group of Ectoplasm's clones. They find Gentle Criminal and La Brava already beaten by Izuku, and Gentle surrenders. Afterward Ryo credits Izuku with saving the festival while chewing him out for acting alone on a provisional license without calling the heroes nearby. Izuku accepts the criticism, which satisfies Ryo enough that he flings him off toward the festivities.

The Final War brings a strange symmetry. When Skeptic seizes U.A.'s main systems and its underground evacuation network, La Brava hijacks the work from under him alongside the Police Force, and Skeptic bolts only to find Hound Dog and students from Ketsubutsu Academy High School waiting outside his hideout on her tip. Ryo remarks on the odd turns fate takes, working beside the criminals he once arrested while Gentle rescues the floating U.A. above, then hauls Skeptic away under arrest. Later, once Shota Aizawa regains control of Kurogiri, Ryo is among the heroes warped to Mt. Fuji against All For One, carrying Thirteen on his back so she can pull the villain in with Black Hole while Gang Orca, Seiji, Burnin, and others blunt his counterattack and let the swarm overwhelm him. His Quirk grants him canine traits including a heightened sense of smell. Eight years later he resigns from the school and owns a dog park.