Kaiju

What is a kaiju? Think Godzilla. Yes, big scary creatures that engage in massive feats of combat, and destroying cities. There have been many kaiju made in the mascot community, Chief among them being those in Spotzilla's crew of monsters. Other less notable creatures such as gladerion the gladiator monster are often in hiding in the kaiju canyon, and have not often been sighted.

Kaiju hot spots:

Castle BigBear: Many kaiju have been captured and trapped in the many dungeons under castle bigbear. These are often the most feral of beasts, and are used for study, and some who generate their own energy are even used as fuel. Other beasts who shed scales have these harvested for armor or even building materials. Some kaiju have even been domesticated, like Gladerion, Spotzilla, Bigbearagon, Tadpoleman, or Elespot. They help combat foes of all manner, especially other kaiju.

Kaiju canyon: A deep gash in the land, populated heavily by kaiju. There are many facts yet unknown about this location, though some hypothesize it may lead to something known as "The Lawless Monster Graveyard". Whatever it is, a few things are known for sure: this canyon is very deep. The canyon is largely unexplored. And it is filled with kaiju.

Lawless Monster Graveyard: Currently considered a myth. Apparently there may be a mysterious dimension inhabited by the spirits of countless monsters, much like the Asgard of mythology. Defeated monsters may descend from this plane to wreak havoc apon Mascotia. Currently this is considered superstitious nonsense, but who knows. It would explain how dead kaiju keep coming back after countless deaths.