I really dislike the Cerberus enemies. Like it’s fair for them to have 3 turns to attack! And don’t even get me started on how many different moves they have...
I recommend using a Warrior.
They can deal great damage to Dark Sun just by themselves, but they’re even better when you use Hyper Sprinkles, too.
Dark Sun’s regular single target attack will deal less than 100 damage to a Warrior if they have enough defence food buffs. Dark Sun’s multiple target attacks are pretty good on them, but they make up for it with their high HP stat.
At higher levels, they have strong single target and multi target attacks, which makes them able to attack Dark Sun and the medals whilst still dealing great damage.
They can get rid of other teammate’s nightmares with their Snap Out Of It/Slap move.
And they can revive fallen Miis. This is really handy for when your healer faints and you’ve used up your Life Sprinkle already.
I think that they’re fantastic for Dark Sun. Vampires, too. But it’s all up to you!
I had a kind Cleric. Everyone’s relationships with her boosted extremely quickly, but I’m thinking that it was more because of the healing rather than her kind personality. But it’s good to use a kind Mii when training up new Miis, because they can boost relationships with the kind Mii much faster than Miis with other personalities. (Besides the Energetics with Cheer, they are the only personality that can boost friendships from their quirks.)
But you do you when it comes to which personalities you think are right for your teams. :)