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Asmodeus Alice (アスモデウス・アリス) is one of the main deuteragonists of the series. He is friends with Iruma Suzuki, though self-proclaimed loyal servant of the latter, and considered to have a great amount of magic and power.
Alice has a tall stature and feminine features. He has fair skin and medium-length light-pink hair. He has pointed ears and his eyes are magenta with long eyelashes. Instead of wearing Babylus' school uniform, Alice wears a formal set of his own. He wears a black dress shirt under a white waistcoat and an elegant white overcoat with gold trim, complimenting the gold-trimmed boots and white trousers.
Initially egotistical, Alice gains a more level opinion of himself after losing to Iruma in a duel. Following his defeat, Alice becomes fiercely loyal to Iruma and unknowingly helps him navigate the oddities of the demon world. Alice still takes great pride in his abilities and fire magic, seeing them as symbols of his family.
Alice was born in a notable noble family. He is an only child.
Harvest Festival Arc
Alongside Sabnock Sabro, he was assigned to Balam. Their training consists of sparring with Balam, and being unable to go home unless they manage to land a hit on him.
Fire Magic: Alice is capable of wielding fire magic extraordinarily and effectively. In addition, he is able to use it as both offensively, through the use of fireballs or a sword made out of flame, or defensively being able to create walls of fire.
Enhanced Winged Flight: Not only Alice is capable of flight from his wings, he is also able to use them competently, and faster than normal circumstances of flying, without even gaining a single bead of sweat. 
Exorbitant Strength: Alice is proficient in his strength. Despite is lean appearance, he is able to block offensive attacks effectively, and is able to catch large objects such as a vending machine by only using one arm, as well as throwing them at ease.
Gorgon Snake: Alice's familiar is a Gorgon Snake. It is a macaroon cream-colored with purple details on its edges. It is also a winged creature (which has claws on the tip of each side of wings) that has a pair of massive-sized horn on its head, has red scaling eyes and two sharp pointed fangs. A raging fire burns at the tip of this familiar's big tail. It also has the ability to breath fire, masterfully in manner.
After Alice's defeat, he pledged a devoted loyalty towards him. During Iruma's wicked phase, Alice was in awe of his confidence and commanding presence. He believes Iruma can become the next Demon King, as he was able to win the support of others through kind methods.
Initally viewing her as a nuisance to Iruma, Alice has since grown accustomed to having Clara as a friend. Though he constantly reprimands her for her childishness.
In demonology, Asmodai (also spelled as Ashmodai, Asmodeus, Asmody, and Asmoday) is a Great King of Hell, with 72 legions of demons under his command. He is depicted as a strong and powerful figure, with three heads (a bull's, a man's, and a ram's), a serpent's tail, issuing flames from his mouth, while sitting upon an infernal dragon and holding a lance with a banner. He is also considered one of the Seven Crowned Princes of Hell, representing the Deadly Sin of Lust.
A mistranslation originally labeled Lily and Viole Alice's sisters. Though this was not the case, many fans are not aware that it was an error. The erroneous translation can still be read on many websites, but the original group later corrected the translation to "a relative's children."
Asmodeus' name has been translated the same way by most translators (Asmodeus). The official romanization released in the character booklet that came with chapter 185 was "Asmdeus." The virtual unpronounceablity of this spelling ultimately made many question the validity of the character booklet's romanizations.