Youjirou Oga

is the father of Tatsumi Oga and Misaki Oga. He also has a wife.

Appearance
Youjirou is a middle aged man with combed back hair with his eyes obscured by glasses.

15 years ago he greatly resembles Oga, save for his glasses which he still wears in the present.

After the change in the timeline, he became more muscular as he can be seen lifting weights.

Personality
Unlike his children, Youjirou 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. It should be noted that despite his delinquent nature, Youjirou has no fear of his son, rather Oga will get scared of him if when he's mad, due to him gaining a volatile personality. 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. Youjirou 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.

Return to Ishiyama High School Arc
One morning, he and his family sit down for breakfast. Youjirou reads a newspaper as he listens to his wife talk about bringing Baby Beel to a "trial" nursery school nearby. He supports the idea and attempts to use Baby Beel's age as a good reasoning why, only to realize that he does not know the infant's age; with the thought brought to mind, he asks Oga about Baby Beel's age.

Abilities
Youjirou 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! - Youjirou's signature move where he slides on the grounds, spins, and then bows, all the while apologizing constantly.

Etymology

 * The name Youjirou means "light, sun, male" (陽) (you), "two" (二) (ji) and "son" (郎) (rou).
 * Youjirou's surname Oga means "male, man" (男) (o) and "deer, venison" (鹿) (ga).