Amaimon

Amaimon's real form is that of a demon, but he manifests in the human world using the body of a teenage boy named Ambrosius Faust.

Physical Appearance In his human form, Amaimon has distinctive dark green hair with a lighter green spike, and his fingernails are long and claw-like. His style is marked by a jacket with crossbones for buttons, green arm warmers, and a black and pink short-sleeved shirt with tears on the ends. As a full-power demon, he exhibits longer ears, two horns, a muscular build with green skin and red markings, as well as an alligator-like tail.

Personality Traits Amaimon's demeanor is typically calm and seemingly indifferent, yet he places high value on his own power. His carefree attitude masks a brash and arrogant side, especially evident when his enjoyment is interrupted. Disliking defeat, he can become seriously enraged if his plans for amusement are spoiled. Despite his formidable presence, Amaimon exhibits a playful side, not always taking opponents seriously, which indicates either overconfidence or exceptional combat prowess. He has a fondness for his familiar, Behemoth, and can be quite distressed by any harm coming to it.

Background As a Demon King, Amaimon is part of a powerful lineage, with Satan as his father and several notable demons as siblings, including Mephisto Pheles and the series protagonist, Rin Okumura, who is his younger half-brother.

Abilities As a member of demon royalty, Amaimon boasts considerable strength and abilities, although the full extent is often shrouded by his playful and mysterious nature. His combat skills are suggested to be very high, often toying with opponents rather than engaging in serious battle.

Childlike Curiosity: Despite his ancient age and immense power, Amaimon often exhibits a childlike curiosity and a penchant for seeking amusement. His interest in the human world and its various aspects can sometimes seem innocent, but it's underpinned by a lack of understanding or care for human norms and the consequences of his actions. Impulsive: Amaimon doesn't seem to plan his actions thoroughly and is prone to acting on whims. This impulsivity can make him unpredictable and, at times, dangerous. He seems to value instant gratification and acts according to what he finds entertaining at the moment, regardless of the potential chaos it might cause. Cruel Indifference: His demeanor can quickly shift from playful to cruel. Amaimon often fails to recognize or simply doesn't care about the suffering of others, whether they are human or demon. This indifference is a hallmark of his demonic nature, emphasizing the divide between his perspective and that of the human characters in the series. Dominance and Pride: As the King of Earth, Amaimon carries a strong sense of pride and desire for dominance. He asserts his authority through power and seems to enjoy demonstrating his superiority over others. Challenges to his authority or defeats are met with intense rage and a drive to reassert his dominance. Mischievousness: Amaimon enjoys toying with others, whether it be his enemies or even his allies. This trait often manifests in the form of pranks or teasing, though it can escalate to more destructive acts if he's sufficiently motivated or entertained. Resilience: Despite his seemingly carefree nature, Amaimon is not one to give up easily. His resilience is not just physical but also mental; he bounces back from setbacks with a renewed, if not more dangerous, zeal. Affection for Familiarity: His attachment to his familiar, Behemoth, reveals a capacity for some form of affection, though it's unclear if this is a genuine emotional bond or a possessive attachment to something he considers his property. Complex Relationship with Siblings: Amaimon's interactions with his siblings, especially Mephisto Pheles and Rin Okumura, reveal a complex dynamic. There are hints of rivalry, indifference, and perhaps a semblance of familial ties that don't conform to human expectations but are significant within the context of demon society. Adaptability: Amaimon's ability to adapt to different forms and environments, as well as his willingness to engage with the human world, show a level of adaptability that is unusual among demons of his rank. This trait allows him to navigate various situations with ease, although not always successfully.