I'm working on a new game and I'm using some homemade enemies because I believe, from deep in my heart, that I won't find these animations anywhere. Most of them will be Brazillian folklore monsters and creatures, upgrading latter to some Lovecraftian deities.
You can use these for free, putting credits to me on non-commercial games.
For commercial games (are you sure you don't want something better?) you have to send me a message!
I'm not the best artist out there but here it goes:
Boitatá is a brazillian fire gigantic snake which inhapits forests, burning them with no remorse.
And a video demonstration (I have no clue on how to make gifs, so video it is...):