For the moment I didn't play much, I'm waiting the full release to enjoy this very promising game so maybe
this is a noob question for veterans players :-D

Can you tell me if the game is using ennemies sizes and if at some point we will encounter bosses like big dragons
using multiple grid spaces (ex: 2x2 for a giant or even 1x2 for a big long "crocodile") ?

I'm level 12 party and so far everything is a single hex

steam has a post that lists the devs' plans for the game, and large creatures is on there