Grandpa Danger

Grandpa Danger is an adventure manga series by Kazutoshi Soyama first published by Shogakukan in CoroCoro Comic in October 2001. The series was adapted as a 51-episode anime broadcast on TV Tokyo from April 2004 to March 2005, which is licensed by Viz Media in North America as Grandpa Danger, and a series of video games. A second anime television series premiered on October 20, 2012.

Characters

Grandpa（じーさん, Jhi-san）
Yosuke（ようすけ）
Principal（校長, Ko-cho-）
Gebe（ゲベ）
Koutei（コウテイ, 校庭）
Mr.Strongest（最強さん, Saikyo-san）