|Full Name||Saiki Kuniharu|
|Age||39 years old|
|Birthday||May 13, 1975|
|Affiliation||Weekly Shounen Konyaku|
|Live Action||Tanabe Seiichi|
Kuniharu often wears a suit and tie when going to work. He sports a pair of glasses and has brown hair and eyes, a change from his first appearance in the one-shot volume of the series where he has black hair and eyes.
He is sloppy and slovenly, often begging with disgusting teary faces towards his son. He is a layman who is often seen licking the shoes of his boss. He works as a manga editor. His special skill is flattering his boss. His father (paternal grandfather of Kusuo and Kusuke) has passed away while his mother (paternal grandmother of Kusuo and Kusuke) lives in a family house.
- After meeting his wife Saiki Kurumi in November 22, 1994, they got married a year later at the same day.
- He met Nendou's father in the past and the reason why he met his wife right now.
|v · e||Saiki Family|
|Members:||Saiki Kumi · Saiki Kumagorou · Saiki Kurumi · Saiki Kuniharu · Saiki Kusuke · Saiki Kusuo · Anpu · Pushi|