Viper (Old)
Grandpa Viper
Old Viper
First appearance Keroro Gunso Episode 124
Gender Male
Species / Type Viper
Occupation Wanted to go see Doinaka
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Viper (Old) is a character in the Keroro Gunso anime.


He is first seen on the train where Chibi Keroro (as a child) along with Chibi Giroro and Chibi Zeroro hide under his robe from the Conductor Robo. Viper told them about traveling to the planet Doinaka, and how he longed to visit. He hands the group a paper, but the paper he gave them turns out to be the train schedule.

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