Airu Inuzuka (犬塚藍瑠 Inuzuka Airu) is the current head of the Inuzuka House ever since the tragic death of the previous head when Airu was young. He is also the older brother of Romio Inuzuka.
Airu is a young man of high build with short black hair that is swept to the left and brown eyes. It almost always has a serious and intimidating expression. He has a pair of black gloves in his hands, a red tie with the normal uniform of the school, only with the difference of having a band on his left side and having a little longer the sack than the one of the others. students, to distinguish him as a prefect.
When not wearing his school uniform on, he tends to wear a kimono.
Unlike his younger brother, Airu is very intelligent and diligent in most regards, as a result he is serious and strict often coming as across cold, when leading the Black Doggie House. Despite this, he showed a softer side to children as he turned their paper airplane that hit him into a jet.
He will not hesitate to punish others, such as shaving the hair of one member to give him a effeminate haircut and threatening Eigo Kohitsuji for trying to peek on the girls.
He suspected Romio and Persia's secret relationship, though he seemed to openly detest it in front of the other Black Doggies, it is suggested he actually supports it. After discovering it was true, he voiced disdain for it but soon told them to show them change.
While he carries the same hostility to the White Cats House, he is not seen fighting them and treats them like equals but will subject them to the same treatment of the Black Doggies. This was seen when he punished Scott Fold along with the Black Doggies (his brother included). However, it is said that he greatly dislike Cait Sith, most likely because of their contrasting personalities.
Since his father's death, he has most responsibilities and upholding the family's status and takes great pride in it. He will take it lightly if the slightest tarnish appear, as seen when he keeps his brother in line though he does seem to love him and show care towards him.
Airu is very prideful and can be a sore loser, as seen when he quickly challenged Romio to another battle to make up for his loss.
- He is one of the few Black Doggie to not show hostility to the White Cats House.
- He likes dogs, but dogs are very afraid of him.