2 adjectives to describe brownies

When they were about half way there, Osa stopped her father and said: "Now remember, father, you are not to mention the wooden shoe or the geese or the little brownie who was so like Nils Holgersson that if it was not himself it must have had some connection with him.

Sharp wild cries, like the calls of malicious brownies, or the shrieks of condemned spirits, were sent after them, without obtaining response.

2 adjectives to describe  brownies