Poll time! What monster's next? (Patreon)

So I've started working on the next social arc and I want to introduce a new monster (and transform potion). I have a few monsters in mind, but thought that this would be the perfect opportunity to involve the community.

From the list below, which monster would you like to see introduced into the game? If none of the below mentioned creatures tickles your fancy, then please feel free to leave a reply with your own suggestion.