Dante Zogratis

Dante Zogratis is a member of the Spade Kingdom's Dark Triad and the host of the devil Lucifero. Dante seems to be a calm and easygoing individual. Even in the face of a surprising turn of events, he does not lose his cool. He is rather manipulative and will do anything as long as he gets his way. He pushes Asta to the extreme by harming Gauche. He believes that evil is the true nature of humanity and the world is too dull because of not enough people being willing to give in to it. Therefore, he considers being called evil a compliment, and encourages other people to embrace their malice, as it is a supreme emotion only humans have. On top of this, he tends to give a satisfying smile when others embrace their "humanity". Dante is extremely possessive as he bluntly declares Vanessa Enoteca to be his woman after being impressed by her magic that can alter fate.

When Vanessa uses her magic in an attempt to save Asta, Dante becomes extremely enraged that she would use her power for anyone else but him, showing a lack of care or respect for her as a person with her own will. This is further evidenced by declaring Grey as his woman as well, after seeing her display arcane level magic. Dante thinks lowly of people who have very little mana. He seems to enjoy fighting, as he maintains a wide smile on his face going up against Asta and Yami. Dante is a tall man with green eyes and black, combed-back hair and noticeable facial hair. His most notable feature is a black mark that runs along the entirety of his forehead. He also has a large scar from his left shoulder to his right hip where Asta slashed him with Yami's katana. Dante wears a black shirt with a high collar, a brown jacket, and a dark blue fur cape with a short white fur mantle on top. His black pants are tucked into a pair of black, knee-high boots. Two black belts wrap around his waist, and a third crosses from his left shoulder to his right hip. The belt around his waist has the Spade Kingdom insignia on the buckle. He also wears a gold crown with tall spikes and red inset jewels. While using 50% of his devil's power, a black substance forms a pair of curved horns from the his temples and a pair of bat-like wings from his back, and covers his mantle and chest. His irises change color, and his pupils become vertical slits. The marking on his face expands with the vertical lines extending up into his hairline and down over his eyes to his cheeks. When he reaches 80% of his devil's power, two more horns appear on his forehead. The black substance covers half of his face and most of his body. He grows a tail with a tip that has a similar shape to the symbol on his chest, and a second set of wings grow from lower on his back. After Dante reaches 100%, the dark-colored substance covers most of his body. The second set of wings on his back and set of horns on his forehead grows. A fracture-like pattern appears on lower of his wings and goes from the center of the mark on his body. Two long lines appear on the length of his limbs and horns. The light-colored substance forms another mark on his face, similar to one he has when using 50% of Lucifero's power. A black substance covers his crown entirely, making it seem fused to his head. His ears also become pointed. While serving as a soldier in the Spade Kingdom's military, Dante wears the standard soldier uniform. He has no facial hair or mark on his forehead.

Nacht Faust

Nacht Faust is a former nobleman of House Faust, the vice-captain of the Clover Kingdom's Black Bull squad of the Magic Knights, and a devil host. He spends several years working as a spy within the Spade Kingdom. Nacht uses this magic attribute to manipulate shadows. He is able to slip in and out of the shadows of other people and things, immobilize people who step into shadows, and physically restrain people with shadows. Nacht combines his Shadow Magic with Yami Sukehiro's Dark Magic. The two magic attributes continuously synergize and strengthen each other. Nacht possesses tremendous levels of physical endurance, as shown when he continues to fight two highest-ranking devils after being pierced with multiple needles of burning ice.

As a nobleman and the vice-captain of the Black Bull squad, Nacht possesses a large amount of magic power. He can increase his magic power by using his devils' power. Nacht is host to four mid-ranking devils who grant him power: Gimodelo, Slotos, Plumede, and Walgner. He uses four relics linked to the devils to temporarily summon them into the living world, either as large masked beasts or as small familiars. He can also merge with their larger forms, allowing him to access the power of Unite. As he has four devils to perform Unite with, he has at least four different Unite Modes, with each mode giving his magic an additional effect or ability to use in battle. Nacht can control all the mana in an area around him to increase his spells' power and range. Nacht possesses a grimoire that contains various shadow-based magic spells. Nacht carries four relics that are connected to his four devils: a feather, two claws or fangs, and a braid of hair. Nacht is a pragmatic and logical person. He knows that Asta has no chance of saving Yami from the Dark Triad alone. He believes that losing a fight is the loser's own fault and considers losers to be idiots. Nacht is not shy about expressing whether or not he likes someone. He is also unafraid of expressing his dislike of all the Magic Knight captains to their faces. He has a very specific ideology about what determines good and bad; something is only good if it is good from the start, where as something bad that becomes good, though a pleasant surprise, is still ultimately bad. Nacht believes that doing good does not make up for past wrongs. This belief likely stems from his inability to forgive himself for his actions.