Youjirou Oga

is the father of Tatsumi Oga and Misaki Oga.

Personality
Unlike his children, Oga's father is a very moral and humble person. Upon being introduced to Hilda and Beelzebub IV, he immediately forces his son to take responsibility for them. He even went as far as to slam his son's head into the ground and make him apologize for his insensitivity. He likes having Hilda and Beel in the family and tries his best to get along with them. In the anime, he even has a sliding grovel which he is quite proud of. He also often feels rejected when he tries to play with Beel, who prefers to play with Oga. Oga's father is shown to be very apologetic when someone has a problem with him or his family, and will use his sliding grovel whenever it happens. He likes to drink beer during the day which his wife doesn't approve of.

Abilities
Oga's Father seems to be where Tatsumi gets his athleticism from. This is shown from the fact that he is able to perform stunts like his sliding grovel and manhandling his son. Also, when he first introduced his sliding grovel his daughter said that it was hard to do. A fact that was later reaffirmed in the (anime) by Hilda.

Sliding Grovel!:*Jumping Spin Turn Rolling Grovel! - Oga's Father's signature move where he slides on the grounds, spins, and then bows, all the while apologizing constantly.

Trivia
In an episode preview, he reveals that he is upset that he doesn't have a name yet, complaining that even Furuichi's sister has one, but not him.