Got this game a week ago and I'm having so much fun with it! I ended up making my team out of the Nexo knight characters.
Clay=Warrior
Jestro=Cleric
Lance=Popstar
Merlok=Mage(obviously)
Ava=flower
Robin=Tank
Aaron=Imp
Macy=Warrior(unfortunately classes only get one type of weapon so she's got a sword like Clay)
Axl=Chef(because why not)
I casted Monstrox as the dark lord as well, but i don't know if I'll draw him.(comment if you want me to)
Okay possiable spoilers for the game around! continue at your own risk.
Okay here you go.
Monstrox as the Dark lord (and ex dark lord.)
Kinda worried that I made him a bit goofy looking though. You don't really get a lot of character making options in these Mii games.