Let’s come up with a monster.

Remorhaz is a giant worm that lives in the ice. Its scales blend in with the snow, so it can camouflage itself in snowy areas. Due to its enormous size, it can swallow creatures of levels 1-3 whole. Taken from D&D. Mammoth is a giant animal covered in fur that lives in the ice. It is mostly not aggressive, but it is ready to fight at the first sign of danger. Ability: giant size, attacks with tusks in the cell in front. Angyak is a child born and left to freeze in the cold in the mythology of the Nanai people (they do not have abortions); it becomes a ghost, an Angyak. Abilities: undead, inspires fear. Horker is something like a giant walrus. On snowy and sea terrain, it receives +2 to attack and defense. From Morrowind. By the way, what are the names for pig-men and elephant-men in fantasy? Something like rat-men are called Skaven (Warhammer) or Osi (Arcanum). Added 1 minute later No monsters should be stronger than city monsters, otherwise it will be a failure! - I disagree, azure dragons are stronger than city dragons, but this does not ruin the game, the main thing is to make such neutral creatures difficult to access.