![Ittosai Kunieda](https://img.flawlessfiles.com/_r/400x400/100/f9/4b/f94b204b26b47ad11469f162f13e26d2/f94b204b26b47ad11469f162f13e26d2.jpg)
Ittosai Kunieda
邦枝 一刀斎
Aoi and Kouta's grandfather. He is the master of the shingetsu style and Kunieda's instructor. He has a violent personality and is a very stern man with a hair-trigger temper. He also adopts an attitude of fighting first, asking questions later.
Not only does he know about demons and the demon world, but he also recognizes Oga as a contractor and decides to train him to use demonic powers.
(source: Beelzebub.wikia.com)
Not only does he know about demons and the demon world, but he also recognizes Oga as a contractor and decides to train him to use demonic powers.
(source: Beelzebub.wikia.com)
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Beelzebub
Supporting (Role) TV
![Iwasaki, Hiroshi](https://img.flawlessfiles.com/_r/100x100/100/48/94/48947f63548ddd2efee1e61b62dd244b/48947f63548ddd2efee1e61b62dd244b.jpg)