Jinx is a martial arts master who operates a dojo in Monstro Town in Super Mario RPG: Legend of the Seven Stars. Although he is extremely small, he is also enormously powerful. Visiting the dojo is not necessary to completing the game, and is an optional sidequest. If Mario walks inside the dojo, Jinx's student Jagger will notice Bowser and kindly offer a challenge against the party. After beating Jagger, his Sensei Jinx reveals himself and can be fought.

----------------------------------------------------------------- What I want for this voice --------------------------------------------------------------------
Any female voice that can do a boy voice

- or - 

A REAL GOOD child actor