The day after Kron reached master level, I'm still with the circus. I didn't bring Kron and the others back to Monsters Village for Kron's battle against Spot. It's because there is already someone else to bring them there. The Centaur Summoner.
After Kron reached master level, I brought everyone back to Cassau. Just the humans. Not the monsters.
As for the monsters, I brought them all back to Monsters Village. Except for Andro who is too big.
All the monsters, including the monsters that the Tamer during the time we were protecting Kron, were all brought to Monsters Village. He managed to tame quite a lot of monsters even after the vampires killed all his tamed monsters. He's quite good.
Those tamed monsters were not that smart. They can't communicate with humans, and they only move instinctively. But now that they have been tamed, they will obey Tamer's order to not attack other monsters and just hunt their own food near the Monsters Village.