His facial features are always hidden by his thick beard and hat. He has a deep booming voice which it makes him appear to be much older than he seems.
He's dependable and a man of a few words. Like Kumatsuka Satoru, he's shown to be attached to his daughter, though, not on the same fanatical level. He's also a loving husband to Yukari.
He is the father of Midori and is married to Yukari, the school secretary.