Kihara Noukan

Kihara Noukan (木原 脳幹) is a character introduced in Shinyaku Toaru Majutsu no Index. He is a member of the Kihara Family, first referred to by Kihara Byouri in Baggage City.

Etymology
The Kanji for Noukan literally translates to Brainstem (an important part of the brain that is located just above the hypothalamus).

Appearance
He is a golden retriever with arithmetic circuits externally attached to him.

Background/Characteristics
Despite being a dog, Noukan is capable of human speech, and has the voice of a man who seems to be in the prime of his life. Furthermore, he is said to be the most influential of the Kiharas in many different fields.