Ryo Inui

Ryo Inui (犬井 猟), also known by his hero alias "Hound Hero" Hound Dog (猟犬ヒーロー ハウンドドッグ), is a Pro Hero and the Lifestyle Guidance Counselor at U.A. High.

Personality
When angry, Ryo speaks in a incoherent and violent manner with a mix between words and a sound akin to a dog's growling.

Unforeseen Simulation Joint Arc
Ryo and several other U.A. High teachers arrive at the USJ to help Class 1-A and All Might against the League of Villains' attack.

Internship Arc
During the Opening Ceremony, Ryo has some final comments. Unfortunately his anger causes his speech to come out as a mix of words and incoherent growls and to end with a howl, scaring a few of the students. Sekijirou Kan relieves Ryo of his speech and reiterates what Ryo wanted to say as the Pro Hero sulked away angrily.

Quirk and Abilities
Dog: Nothing is known about the Quirk except its name. It can be assumed that his Quirk gives him all the advantages that a dog might have, including heightened sense of smell and hearing.

Sekijirou Kan
Ryo and Sekijiro appear to get along well. After Ryo has an angry fit, Sekijiro approaches him and takes over for his speech, having understood what Ryo wanted to say.