The Prince of the Sablé Kingdom (referred to as Sabure Prince in Super Smash Bros. Brawl) is the protagonist in the Japan-only Game Boy game, For the Frog the Bell Tolls. He has no official name, since he is named by the player in the beginning of the game.
A naive but kind prince in the Game Boy title Kaeru no Tame ni Kane wa Naru. He sets off on a journey to the Mille-Feuille Kingdom to resue the kidnapped Princess Tiramisu. If you summon him in this game, he'll either turn into either a frog or a snake. When a foe gets close, he'll kick up a cloud of white smoke and go on the offensive.