Barbatos is a butler with an almost unusually calm demeanor, though he likes lightly teasing others at times. He takes his job very seriously, and lives to be selfless and serve others. Despite this, he's extremely possessive of and obsessed with the object of his affections, to the point of throwing away all his morals in order to have them. He's loyal and respectful, and will go to great lengths to achieve perfection. He smiles even when he's angry, so he can be very intimidating at times.