Savage humanoid, living at caves.
They are not strong at individual, but are formidable opponent.

Living dead created by magics of darkness.
It's not dangerous when fighting them carefully. They're slow and dull.

Skull swordsman wandering for fight.
Careless approaching will make you into minced meat.

Though baby, they're dragon.
They're strong enough to turn average adventurers into charcoal on moment.

Many other enemies exist.
Look at powerful ones, with your own eyes.