|Voiced by||Jōji Nakata (Japanese)|
|Species / Type||Keronian|
|Occupation||Keron Army soldier|
Just like his sons, Giroro's father is a Keron Army soldier and was allegedly a notable corporal (as mentioned in Episode 289). Not much information is given on him but he seems to bear somewhat of a harsh personality based upon Giroro's recollections of his behavior. Nevertheless, he is most likely proud that his son will keep on trying until Pekopon is conquered.
He is usually seen with Keroro's Father. The pair often spending time together out drinking or visiting hot springs.
His appearance is very close to Giroro's, except that he is a darker red color, similar to a blood red. His eye shape is similar to Garuru's; with thick and long eyebrows as well as a mustache. He also wears a light green haramaki around his waist and a light-red bandana with a black skull symbol on his head.
Similarly to his sons, he lacks a symbol on his belly.