The big sister of the three, Pikki is the cutest frog in town, and is always turning heads with her looks.
She loves climbing trees and cooking.
She often cooks hotcakes with Keroleen. She is a talented baby sitter, and is able to name all of the kids in Donut Pond.

Koroppi is a bit of a chicken compared to Keroppi, but he never gives up once he has started something.
He looks just like Keroppi, so everyone often gets them mixed up.
Koroppi’s hobby is fiddling with machines.
He is the middle of the three children, and is a good singer, belonging to the Kerokero Choir.

Papa is a doctor at the Hasunoue Clinic.
One check up with Papa will make you twice the frog you used to be!
He is friends with another doctor, Bunbukugennai, the father of Hanachan from Pokopon’s Diary.

Mama is an expert cook, and she runs a little restaurant.
Of course she’s a master at cooking Keroppi’s favorite food: rice balls!
Her rice balls will have you leaping about like a frog!