Ao Zora to Nakama Tachi: Yume no Bouken

A cartoony action platformer starring Aozora Bank company mascot Aozora and his companions Houhou, Pipi and Chichi, Pyonpyon, Kyuu and Keroro. A Playstation version was developed alongside the Game Boy Advance version.

More about the Aozora Bank and its mascots

http://www.aozorabank.co.jp/kojin/aozora/