Monjirou Oniyama

Gender: Male
Ability: Change soil into cannonballs
Nickname: Onimon
He believes in fair and square fights. He has a tendency to shorten words and phrases, and he has 299 talents.

He loves his home village and wants the village building talent if he wins in order to build his own village back up.

He teaches Ueki some basic fighting techniques to help win the fight against the Black Shadow, (Kurokage) the first person Ueki meets of Robert's 10.