Jinx

Jinx is a sensei and operates a dojo in Monstro Town. Although he is extremely small, he is also enormously powerful. When Mario first arrives at the dojo, he challenges Jinx's student Jagger to a fight. After beating Jagger, Mario can fight the martial arts master Jinx. Jinx will fight Mario three times, getting exponentially stronger with each fight. After Mario wins the third fight, Jinx rewards him with the Jinx Belt, the symbol of his power. Jinx also declares Mario the new sensei of the dojo. Jagger and Jinx then begin to train in Mario's style of martial arts. Their first training assignment is to Jump one thousand times.

SMRPG Stats
First Battle HP 600, Attack 140, Defense 100, Magic Attack 0, Magic Defense 80

Second Battle HP 800, Attack 160, Defense 120, Magic Attack 0, Magic Defense 90

Third Battle HP 1000, Attack 180, Defense 140, Magic Attack 0, Magic Defense 100