Monsters of Jesenreth
While the world contains many civilized places, most of the planet is still a dangerous wilderness full of monsters. Go more than a dozen miles away from a city, town, or road, and you will likely have need of sword or spell.
Some kinds of monsters are common on Jesenreth, others rare or unknown. Given the planet's long history of necromantic and other evil magic, undead are common. The barriers between the Prime Material Plane and the Elemental Planes are thin on Jesenreth, resulting in there being many portals and thus many elemental beings on the planet. The same is true, in spots, of the Feywild and the fey. The final common type of monster is fiends, the devils and demons, who often seek souls or found cults.
Aberrations, oozes, and constructs are rare. Dragons and goblinoids (goblins, hobgoblins, bugbears, orcs, ogres) are unknown, save a few examples from other planets.
There are also dangerous members of the humanoid races, such as bandits, cultists, savage barbarians, evil wizards, clerics of evil gods, sinister rogues, and amoral druids.