Ideas for monsters for my bestiary

I am designing a rpg. The concept is earth is populated with monsters, undead, demons, and other supernatural beasts and horrors that mortals can't see. Some humans can see this though. Player races include Dhampir, Fallen Angel, Dwarf, Elf, Hobgoblin, Human, Orc, Hellblood (half-fiend), and Shifter (near lycanthropes). It is set in our world at our time, yet it is full of fantasy and mystery. I have been drawing inspiration from multiple rpgs, movies, tv shows, video games, religion, folklore, and fantasy.



I want to work in different religions, folklores, and fantasies.



I have been working on a bestiary, but it is lacking.



Does anyone have any ideas for monsters, beasts, and horrors that you would be willing to let me use?

Ideas for monsters for my bestiary