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Overview
Adder is the current head of House Belladonna, a family of demons who rule over the demon world. Adder's father is the previous head and current demon king. Adder is expected to take up his mantle of demon king. He acts to maintain his position of supreme power over the "Six Demon Houses" and hates humans and angels, seeking demonic world domination.

Background
Not much is known about Adder's personal background. However, it is known that Espada was originally the third son of House Belladonna. However, after being captured by humans and later saved by Dia, Espada renounced his ties to the family to serve Dia, making Adder and Espada estranged brothers.

Appearance
Adder is a tall demon standing at 6'2, possessing an average build that nonetheless radiates an overwhelming and dignified presence. His most striking feature is his long, black hair, which is accented by bright green sections and typically tied back into a ponytail. He has golden eyes. His outfit consists of a dark jacket with a neck-high design, featuring a subtle zigzag pattern at the bottom front. The jacket's design incorporates gold trim paired with a matching grey blazer and dark trousers. Over the jacket, he has a long, white scarf with similar gold accents and patterns. He also wears black formal men's shoes, contributing to his dignified appearance.

Personality
Adder is a profoundly arrogant and proud demon who's stature commands absolute obedience. As the future demon king, he is fueled by intense ambition and seeks total demon world domination, viewing humans and angels with a deep-seated hatred. Despite his high-ranking status and natural charisma, he is notably guarded, frequently putting up emotional "walls" and maintaining an aloof, superior attitude to keep others at a distance.

Relationship with Espada
Adder is Espada's older brother. Their relationship is a tense one, with Adder being a "frightening existence" to Espada. He often prys at Espada's inferiority complex.

Relationship with RosΓ©
RosΓ© serves as Adder's partner in crime. They share a functional alliance based on mutual goals, though RosΓ© also dotes on Espada, which adds a complex layer to their group dynamic.

Relationship with Vanis
Vanis is a fallen angel living in Adder's mansion. Their relationship is strictly professional, bound by "mutual interests". Vanis provides Adder with valuable intelligence gathered from various sources in exchange for residence and protection.

Relationship with Dia
As the "Demon Prince," Dia represents a direct threat to Adder’s power and his goal of world domination. Adder possesses overwhelming magic that suppresses others, making him one of the few beings capable of truly challenging Dia’s authority.

Relationship with Fiori
They address each other by name, but as Fiori resides at Colchicum Castle with Dia and harbors a hatred for demons, they are naturally on opposing sides.

Relationship with Claude
Claude addresses Adder with the formal title "Sir Duke of the Demon World," acknowledging his high status. As heads of their respective influential regions, their relationship is one of mutual recognition between powerful political leaders.

Fun facts
He is a skilled gourmet cook.
He has a specialty in gambling.
He enjoys music and incense burning.
He also enjoys lucid dreaming.
His favorite food is caviar.
He strongly dislikes spicy food.
He has a pet peeve for incompetent people.

Gallery

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Pub: 19 Jul 2022 20:32 UTC

Edit: 27 Dec 2025 22:53 UTC

Views: 357