Grandpa Danger

Grandpa Danger (絶体絶命でんぢゃらすじーさん) is an adventure manga 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）
 * Protagonist of this work. A self-proclaimed old man who teaches how to survive the dangers of the world.

Yosuke（ようすけ）
 * Grandpa's grandchild.

Principal（校長, Ko-cho-）
 * The principal of the school that Yosuke attends.

Gebe（ゲベ）
 * Grandpa's pet. Mysterious cat-like creature.

Koutei（コウテイ, 校庭）
 * Principal's dog.

Mr.Strongest（最強さん, Saikyo-san）
 * The strongest uncle in history.