Asuma Sarutobi

"Focus Alot Well Manny Your Skills Are More Powerful Ever Be While When You Are Dueling We Just Are Be Doing"

Asuma is one of the Five Paths mentors who trained Manny to be more skilled in dueling combat and even also He was very wise and good with dueling but even as that Sarutobi taught Manny to use Water Shinobi creatures in combat

also like Raikage A said that Manny is so smart He's be in the Shinobi Class-Level and as even also Asuma summons Water creatures in Shinobi race and as also his creature was Baiken the Poseidia Dragon who have face Manny in battle duel with his gauntlet and even but also Asuma gave Ramis the Cloaked card to Manny for his dueling skill and also He's mentor to Sonic, Espio, Yuma and Sasha

Creature
Baiken, Blue Dragon of the Hidden Blade

Genius Janit, of the Hidden Blade

Kaidou Crawler, Hidden Blade

Orochi, of the Hidden Blade