Sir Cumference

"Kaijudo City Needs You My Boy, Runeterra Depends On It"

Sir Cumference is the investor who invented the Kaijudiscs to catch Kaijudo Creatures that trying to destroy the City Of Duel Master and also He was best friend of Manny's parents who are Demacians Heroes in Runeterra, He's helps Manny to fight his half brother Orm on basic combat

But Cumference is one good expert and know anything about Dino Charge Rangers's scheme putting influence curse on everyone in the Kaijudo City on destroying Manny but knowing that the Rangers were the ones created Influence Serum on upon every Kaijudo Creatures from the Creature