Hogni Ragnar (ヘグニ・ラグナール) is an executive of the Freya Familia. Before this, he was the king of the Dark Elves on the Hyazning island.
Hogni has tanned skin, slightly gray green eyes and silver hair that could also look pale purple. He wears a black outfit with a black cloak.
Hogni is extremely loyal to Freya and is willing to carry out any order. He is jealous of Bell because of the attention he receives from her. However, after training with Bell for a period of time, he begins to respect and be fond of his pupil due to the latter's kind personality.
He is also shown to have chuunibyou tendencies based on the way he talks. He is known for having a troublesome personality, as he often acts cowardly in battle.
Due to the constant pressure he suffered from his kingdom, he developed a great fear of the gaze of people, considering it the most terrifying thing in the world, as well as a love for the dark, as within it he cannot be seen by anyone. Bell thinks that Hogni is more socially awkward than Ais, incredibly nervous by nature due to the way he talks and acts that exacerbates the problem.
Hogni used to reign over the Dark Elves as a foolish and fearful king. Tired of it, one day he met Freya, who said she would free him. Some time later, a battle was fought between his people and the White Elves, which ended both kingdoms.
During the battle he was able to face Hedin and, after three days of fighting, Freya appeared before them. After discovering that she had caused the destruction of their kingdoms to free them, both of them decided to go with her.
Concurrent Chanting (並行詠唱): A high level technique involving casting magic while fighting or moving around. Its difficulty is likened to dealing with a bomb with both hands while fighting due to the chance of failing a chant or not being able to control their own magic power.
Magic Swordsman (魔法剣士): Hogni is a combatant capable of fighting both as a member of the vanguard and as a mage, using his ability with concurrent chanting to wield his weapon and magic with great skill in battle.
Unlike other Elves, Hogni excelled at swordsmanship rather than magic, although he also possesses great skill with the latter, having great talent for battle. During his time as king, his power was such that he became powerful enough to be comparable to a person with a falna despite not having one. Along with Hedin, they are known as the most brutal magic swordsmen.
Dainsleif (ダインスレイヴ): Dainsleif is a short chant magic that activates a second personality more bellicose than the original, making Hogni much stronger.
Burn Dain (バーン・ダイン): Burn Dain is a short chant explosion magic that sends a roar of flames from Hogni's arm before exploding at a close range with the power to send nearby enemies flying.
Mage (魔導): Mage improves the power of Hogni's magic, widens effect range, and makes mind usage efficient. It also creates a black magic circle under him when he uses magic.
Victim Abyss (ヴィクティム・アビス): Victim Abyss is an ominous black longsword, which is actually a curse weapon. Its curse extends the length of the blade invisibly in exchange for consuming more of Hogni's stamina, so that its victims are unable to tell the blades true length.
- Hogni is named after the wielder of the sword Dainsleif from Norse mythology. His alias and magic are based on the sword itself.
- Hogni is currently the only Dark Elf in the series.