Rosvaise is a fascinating character with a rich and interesting background. She was once a Valkyrie serving the chief god Odin, but became a devil and joined the Gremory household as their "Chariot." Later, she transferred to Issei Hyoudou’s peerage and grew stronger while becoming an important heroine in the story. Rosvaise is known for her sharp mind, mastery of Norse magic, and serious personality, but she also has a charming, awkward side, especially when it comes to love. She is skilled at saving money, has a unique love for discount stores, and her growth from attack-focused magic to more balanced abilities makes her stand out. She is loved by fans for her quirks, story development, and moments of vulnerability.
Rosvaise has long silver hair and wears a purple ribbon on her head.
She is very beautiful and has a glamorous body, with measurements of B96 (H cup)-W61-H89.
Her height is 173 cm and her weight is 59 kg.
Her outfits, whether school uniforms, swimsuits, or even cheap tracksuits, always draw attention because of her natural charm.
Rosvaise is serious and sometimes stubborn.
She is not very flexible and is often described as too earnest.
She is very frugal and loves discount stores, especially the 100-yen shops, where she is a regular customer.
She gets embarrassed easily, and when that happens, her country dialect comes out.
Although young, she is very smart and mature, but inexperienced in love and romance.
She can become tipsy very quickly and gets clingy when drunk.
Rosvaise was a Valkyrie born in a rural part of Northern Europe.
She rose quickly through school as a genius and became Odin’s longest-serving Valkyrie.
She was brought to Japan by Odin for a meeting with local gods, but got left behind due to an incident involving Loki, a Norse evil god.
After being “fired” by Odin, Rosvaise was approached by Rias Gremory, who offered her good conditions to become a devil.
She became the "Chariot" of Rias’s group, and later joined Issei Hyoudou’s team when he rose to high-class devil status.
She also became a teacher at Kuoh Academy, even though she is still in her teenage years.
Rosvaise is very skilled in Norse-style magic, especially attack spells.
She is especially talented at communicating with spirits and summoning them, a skill passed down through her family.
She can use powerful magic attacks like "Full Burst" to defeat many enemies at once.
At first, she relied only on attack powers, but after losing to very strong opponents, she trained to master defense magic as well.
She can now fight well both offensively and defensively, becoming what she calls a “heavy tank.”
She is also great at analyzing enemy strategies and inventing new counter-magic quickly.
She first served Odin as his top Valkyrie and had the longest record with him.
Later, Rias Gremory recruited her to become a devil and serve in the Gremory household.
When Issei Hyoudou became a high-class devil, Rosvaise changed teams to become Issei's servant after being persuaded by Rias.
Her relationship with Issei changed over time, from seeing him as a troublesome student to falling in love with him.
She admires Rias and works closely with her and the other members of the Gremory household.
Rosvaise absolutely loves saving money and has a soft spot for bargain shops.
Issei calls her “100-yen Valkyrie” because of her obsession with cheap finds.
She gets very upset if her clothes, especially her cheap tracksuits, are ruined or lost.
She is very smart and once wrote a research paper that terrorists wanted to use, but it also helped stop their plans.
Although her name comes from an actual Valkyrie of Norse myths, it's not clear if she inherited the name or it was her real one.
Serving Odin and Becoming a Devil
Rosvaise first appears as one of Odin’s Valkyries, assisting him during his visit to Japan.
Because of an attack by Loki, Odin leaves her behind, and she this led to her losing her position as his servant.
Rias Gremory then offers Rosvaise the chance to become a devil, and she accepts in exchange for good conditions, joining as the "Chariot" piece.
She becomes the last member of the powerful and unusual Gremory team.
Growth and Battles
At the start, Rosvaise focuses only on powerful attack spells, overwhelming her enemies with force.
However, after losing to strong opponents in battles like the Kyoto incident and in the match against Sairaorg Baal’s group, she realizes her weakness in defense.
She works hard to learn defensive magic and grows into a balanced “heavy tank” who can handle both attack and defense in future fights.
She becomes a key player in protecting Kuoh Town and managing magical barriers.
Switching Services and Teaching
After Issei Hyoudou is promoted to high-class devil, Rosvaise is "traded" from Rias’s group to Issei’s peerage.
She continues to play a big role in fights, especially in the Azazel Cup tournament, where she receives the Mistilteinn staff to increase her powers.
She also starts teaching at Kuoh Academy, showing off her intelligence and maturity despite her young age.
Romantic Feelings
At first, Rosvaise only sees Issei as a perverted student.
Things change when her strict grandmother Gendul comes to check on her, and Rosvaise asks Issei to pretend to be her boyfriend.
This leads to her developing real feelings for Issei.
Unlike other heroines, she is very shy and not aggressive when it comes to love, making her moments with Issei very sweet and relatable.
Later Story Events
Rosvaise takes part in defending Aulos Academy, and her affection for Issei becomes more obvious during this event.
She continues to show growth in both her powers and her role as a main character.
She ranked seventh in the heroine category of the “High School DxD” popularity poll, showing how much fans appreciate her.
Rosvaise appears in both the third and fourth seasons of the anime.
She also appears in some mobile and cross-over games, although not always as the main focus.
In “Fantasia Re:Build,” for example, she works as a teacher in the same school as characters like Kanata Age and Glenn Radars, but her story is not as prominent in those games.
Her role in cross-media stories might be smaller, but fans are always glad to see her included.
"Is this really okay…? Well, I guess it's fine if it's for Issei-sama."
"My tracksuit… please take care of it. It was a great deal!"
- Height: 173 cm
- Weight: 59 kg
- Measurements: B96 (H cup)-W61-H89
- Birthday: August 8
- Age: teenager
- Race: Valkyrie → Reincarnated Devil
- Peerage Rank: Chariot
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