Monsters, you mean? Yeah, we've got them. But, not nearly friendly enough to justify inviting them to a party.

If you tried that with any 'monsters', you'd just be asking for blood to be spilt.

[ So, Felix is having a hard time imagining a party with monsters partying and such, without causing trouble, of course. Then again he is also imagining Demonic Beasts for the most part when he says monster, so...yeah. ]

I'm guessing the monsters in your world can communicate? In actual words and not growling of some sort, that is.