We don't have premade stat blocks outside of the 13 sample force builds because giving all players access to all game options eliminates power creep and lets you build a dragon the way you think it should be, and I can build my dragon to my own specs.
However, we have certain Inborn Traits that can be used to fit most fantasy tropes. Stout is good for Dwarves, Graceful for Elves, Feral for Orcs, etc. If you can think it you can build it.
I love Mindflayers. I would build mine with the Abomination and Dominate Traits to represent their alien mind control powers.
We have certain effects that pay homage to d&d like the augmentation for the Natural WeaponInborn trait called Claw, Claw, Bite. We snuck a ton of these little easter eggs in their to help people create a 'feel' or style when building their warbands.