There will be unmarked spoilers for those who haven't read the light novels.
Ratatoskr (ラタトスク, Ratatosuku) is an organization created for the purpose of saving Spirits, the cause of spacequakes, through peaceful mean without killing the Spirits. As stated by Kotori, "The organization called <Ratatoskr> was an organization created for Shido's sake."
The organization known as <Ratatoskr> is only known (probably) by the upper level of the government and high ranking military officials. The <Ratatoskr> Command center is on the airship <Fraxinus>, while their headquarters is in an unstated location. Shido's younger sister, Kotori, is the commander of Ratatoskr.
Commander Kotori Itsuka (五河 琴里)
Voiced by: Ayana Taketatsu (Japanese), Bryn Apprill (English)
Shido's foster younger sister. Loves her Chupa Chups lollipops. Commander of the Fraxinus. Her personality depends on the ribbons she's wearing: she acts like a perfectly normal girl her age when she's wearing white ribbons, but switches to a Dominatrix when she's wearing black ribbons. Nevertheless, she still cares deeply for Shido.
- A-Cup Angst: She gets pissed off when Natsumi (in adult form) mocks her inferior figure. Shes also rendered speechless when her clothes dont fit over Mukuros chest. The Ais Catastrophe crossover campaign in Memoria Freese also displayed this trait in an outfit story when Hestia tries out a replica of Kotori's commander outfit.
- Adaptational Nice Guy: The anime considerably tones down Kotori's verbal and physical abuse toward Shido.
- Anger Born of Worry: Whenever Shido throws himself into a situation where she doesnt believe that his Healing Factor will save him.
- After Shido braves Yoshinos blizzard (which would pelt him like a machine gun and freeze him if it detected Spirit power from his Healing Factor) to return her puppet, Kotori punches him and tearfully berates him for not listening to her orders.
- She later punched him again with much sterner criticism after her Spirit form narrowly avoids killing him when he jumped in between her and Kurumi (Kotoris unsealed powers meant that he didnt even have the Healing Factor at that point).
- Anguished Declaration of Love:
- At the end of her first date, a berserk Origami is determined to kill the spirit Efreet that's inside Kotomi, Shido has no idea what her Love levels are, and Kotori is weakened and frightened. Shido tells her that she's his beloved, cherished sister and that he loves her no matter what. Kotori is at first too flustered to respond, but at Shido's urging, she yells out that she loves him and always has.
- When Shido tries to convince her to allow him to confront Beast, knowing that he may be killed without Camael's Healing Factor, she expresses how she can't bare to see him die because she loves him.
- Big Brother Attraction: As a Freudian Slip, she mentions to Mana that being a blood-related sibling means Mana can't marry Shido. That said, put into account that Kotori and Shido are Not Blood Siblings.
- The Captain: As improbable as it is, she's the commander of the Fraxinus ship, and directs Ratatoskr's operations when it comes to Shido dating Spirits.
- Catchphrase: "Now, let's get this date started." to kick off each "mission".
- Clingy Jealous Girl: To Shido when Mana's around. She also doesn't take him telling her that he loves her...like a sister...too well.
- Coat Cape: Has the habit of wearing her red commander jacket like this.
- Contralto of Danger: Her commander mode has a deeper voice than her white ribbon personality (though its still fairly high-pitched).
- Cry Cute: Has her moments, such as When Shido had a real chance of getting Killed Off for Real in the process of saving Yoshino. It's coupled with Cry into Chest when Shido comes back from his "mission".
- Curtains Match the Window: Red eyes and hair bordering on coral.
- Dominatrix: Has domineering tendencies when wearing her black ribbons, though it's mostly Played for Laughs on Shido or Kannazuki.
- Establishing Character Moment: When we're first introduced to Kotori, she wakes Shido up by getting on top of his bed and kicking him in the stomach. Then, Shido scares her but they quickly reconcile shortly afterwards.
- Fiery Redhead: She's quite hotheaded and can alternate between both Tsundere types depending on the ribbons she wears. It's taken to a literal level when she reveals herself to be the Spirit codenamed Efreet.
- First-Episode Twist: She's revealed to be the commander of the Fraxinus in the first chapter/episode. The fact that she and Shido are Not Blood Siblings can also count as this in the light novel.
- First-Name Basis: One of the things that alarmed Shido when he first saw her in her black ribbon "commander mode" was her addressing him by his name instead of "Onii-chan" like her white ribbon personality that he grew up with. She will occasionally slip back in her more vulnerable moments. This is so that he could view her as a woman rather than his little sister.
- Foreshadowing: Anyone who pays attention to her eyes in the anime and light novels can easily tell that it has whitened pupils, and once Tohka finally appears, it's clear those are a Spirit's eyes.
- Her Spirit form's berserk state and the way she acts towards friend or foe is just a taste of what a Spirit will do and act like in their Inverse Form.
- Freudian Slip: While having an argument with Mana regarding who is the better younger sister to Shido, Kotori lets out that blood siblings can't marry... with Shido in earshot.
- Girls Are Really Scared of Horror Movies: She's quite weak to the horror genre, even in her black ribbons. Her crew exploited this in her birthday side story giving her a zombie film as a present, then causing a blackout to get her closer to Shido, with excellent results.
- Girlish Pigtails: Sports long twintails, and is among the youngest characters in the story.
- Hidden Depths: The reason why she wears her black ribbons and her "Commander" personality in general isn't just for her to be strong, its so that Shido could view her as a woman rather than a little sister.
- Idiot Hair: Has a noticeable forelock of hair in all appearances.
- Important Hair Accessory: Her ribbons, more to show her switching personalities rather than Character Development, though. She'll be the nice little sister with her white ribbons, or the sadistic commander with her black ribbons. This is because when Shido bought her the black ribbons for her 9th birthday, he made her promise to be a strong girl as long as she wears them. Guess it worked too well. They eventually show her character development as, after realizing that Shido's feelings for her as a sister doesn't have to be inferior to that of a lover, she starts wearing one of each.
- Improbable Age: She's the commander of a Cool Ship in Ratatoskr at the age of 14. And according to the light novel, she had the position since she was 8. Volume 4 states that it's because she was given Spirit powers when she was eight before they were sealed by Shido.
- Insane Troll Logic: Her reasoning for making Shido date a Spirit falls on this: to make them harmless, they must come to love this world. Ergo, make them fall in love with you, and they will view the whole world as beautiful! However, she has some basis for this, as he sealed her powers when she awakened as a spirit years earlier, though she was unsure of how he did it back then.
- Late-Arrival Spoiler: Date A Live: Rinne Utopia assumes you've read up to volume 4 (i.e. finished watching the anime's first season), as it makes no secret about Kotori's identity as a Spirit.
- Letting Her Hair Down: In her adult form in Volume 16. She wears her ribbon on her wrist.
- Little Sister Heroine: Kotori is a parody of this when first introduced. Her foster brother Shido (and others) even call her his "cute little sister". It then gets subverted when we meet her other personality. The romantic subtext is unclear; she is implied to have some not-quite-sisterly feelings for her brother, but doesn't have a problem setting him up with the Girl of the Week. The only time she goes into Clingy Jealous Girl mode is when she meets his biological sister, Mana, at which point she reveals the level of her interest in him by arguing about who's better and finally declaring that not having any real relation is better because a real sister couldn't ever marry him.
- Male Gaze: Shots of her rear are often shown, mainly during the Opening Narration. Even the first shots of her are her panty covered butt.
- Meaningful Name: Her name has the character for "five" in it. See the entry on Efreet for more details.
- Never My Fault: Berated Shido for asking Kurumi to show him her panties when she was the one who (unknowingly) suggested it to him.
- Not Blood Siblings: The Itsukas adopted Shido when he was young. Although Shido does not see her as a Love Interest, she definitely isn't content with staying his little sister.
- OOC Is Serious Business: She acts like a typical younger sister when we're first introduced to Kotori and Shido, with her freaking out when he claims he'll be infected with a virus that causes him to uncontrollably tickle her if she doesn't let him sleep ten more minutes. When he finds her later in the episode, she speaks with a much different tone and manner than at the house. This is when he finds out she's the commander of Ratatoskr's Fraxinus airship.
- Oral Fixation: She often has a lollipop in her mouth.
- Parental Abandonment: Both her parents are working overseas, and there is no mention of them coming back anytime soon. Her parents finally make their appearance in volume 11.5.
- Phrase Catcher: To Shido, she's his "cute little sister". Regardless of the ribbons she wears.
- Promoted to Playable: In the first run of Memoria Freese's Ais Catastrophe campaign, she was merely an assist. The second run made her playable as an adventurer in her Spirit form.
- Rapunzel Hair: Waist-length twintails.
- Shana Clone: Small, Tsundere (type A or type B depending on the color of her ribbons), Rapunzel Hair, Grade S Zettai Ryouiki, a fondness of lollipops and a literal Fiery Redhead to boot. She even has an Idiot Hair just like the original.
- She's All Grown Up: Happens in Volume 11 where she's turned into a highschooler's age briefly by Natsumi. Happens again in Volume 16, this time as an adult.
- Signature Hair Decs: Her ribbons. They determine her personality depending on the colour. Horns also stick out next to her ribbons when in Spirit form.
- Spit Take: Does this on Reine when she spots Shido and Tohka on their date.
- Trademark Favorite Food: Lollipops, which according to the light novel carry the Chupa Chups brand.
- Token Mini-Moe: She's 14 years old compared to the main cast's 16, and is even introduced as a Little Sister Heroine.
- Tsundere: Strong type A or mild type B depending on her ribbons (black or white).
- Undying Loyalty: She is the only girl whose Love levels for Shido never change. Regardless of any actions he takes, her levels are always maxed out because her affection for him has been cemented for years.
- Why Did It Have to Be Snakes?: She's very weak towards horror-related things, and possibly amusement park rides that go really fast like the sky drop and roller coasters.
- What the Hell, Hero?: Punches Shido after he agreed to Kurumi's game in Volume 16, risking the Spirit powers within him if he loses. Though she admits that he had no choice and feels partially responsible for losing contact with him at the time, thus she offers him to hit her back (he instead responds with Friendly Tickle Torture.
Code name: "Efreet"
Astral Dress: Elohim Gibor
Volume 3 reveals that she is the Spirit codenamed Efreet, having been turned into one by the Phantom, who then told her to kiss Shido to seal her powers. This was how she learned about Shido's ability to seal Spirits' powers. She takes them back to save him from Kurumi in Volume 3, then has them sealed again in Volume 4.
Tropes applying to her Spirit form:
- An Axe to Grind: Camael's default form is a massive halberd. It can morph into a cannon strong enough to vaporize several of Kurumi's clones, and deal a lasting damage on her Angel.
- Ax-Crazy: When she taps into Efreet for too long, she starts giving in to bloodlust, nearly killing Kurumi with a maniacal grin before Shido's pleas bring her back to her senses.
- Big Damn Heroes: She first reveals her Spirit powers to stop Kurumi from destroying Raizen High School by creating a spacequake to cancel out Kurumi's.
- Blood Knight: As Efreet, she slowly starts losing control of herself and practically begs for a good fight, taunting a defeated Kurumi about how disappointing of a performance the latter put up.
- Evil Redhead: The bloodlust-stricken Efreet is easily as much of a threat as the Ax-Crazy Kurumi, although Shido manages to seal Kotori again.
- Glowing Eyes of Doom: Her eyes start giving off a red glow when she loses control of herself.
- Healing Factor: Shido's Healing Factor comes from her Camael. Kotori in turn got the Angel from Phantom. Kotori demonstrates just how ridiculous this ability is by shrugging off nearly everything Kurumi threw at her (including being shot in the head!) before writing the latter off with her Angel.
- Horned Humanoid: She gains a pair of horns in her Spirit form.
- Impossibly-Low Neckline: Her Astral Dress is a kimono worn loosely around the shoulders.
- Legacy Character: Kotori isn't actually the first wielder of Camael. That was actually Saya Yamada, Kurumi's friend.
- Letting Her Hair Down: Her ribbons are tied to her horns in this form, leaving her hair to fall down freely.
- Meaningful Name: Her Angel's name means "the severity of God", and her Astral Dress is Hebrew for "Almighty God". Considering just how brutal her victory over Kurumi's Superpower Lottery was, even if Kurumi was handicapped, there's no contesting its rightfulness.
- Playing with Fire: Her Spirit powers give her control over fire, and nearly all of her attacks are punctuated with violent flame bursts.
- Red Baron: Her Angel Camael is aptly described as "Blazing Annihilating Demon"
- Red Eyes, Take Warning: As soon as Kotori's personality gives way to the bloodthirsty Efreet, she violently flashes glowing red eyes.
- Red Is Violent: The already Tsundere Kotori becomes dangerously unstable in her Efreet persona and has the ability to control fire.
- Superpowered Evil Side: Her Efreet persona nearly consumes her with bloodlust, and it's implied later on that her Efreet Spirit form may have its own Superpowered Evil Side.
- Superpower Lottery: Unquestionably, what with her ridiculous power, her Healing Factor allowing her to shrug off just about everything that doesn't annihilate her, with offensive powers lethal enough to deal lasting damage even on other Angels.
- Swiss Army Weapon: Her Angel can change forms, from a Halberd to a BFG.
- With Great Power Comes Great Insanity: A classic example; she nearly loses control of herself shortly after defeating Kurumi, and only Shido's pleas to stop snapped her out of it. This got so out of hand that she had to be confined like a Spirit, shortly before starting her own date with Shido.
- Wreathed in Flames: When her powers are active, Kotori is accompanied by a blazing inferno.
Reine Murasame (村雨 令音)/Mio Takamiya
Voiced by: Aya Endo (Japanese), Barrett Nash (English)
The analysis officer onboard the Fraxinus. She never gets Shido's name right, and his name is the only one which receives this treatment from her. Becomes Shido's assistant homeroom teacher and physics teacher early on, to facilitate his training. Always looks sleepy.
- The Ace: The Reine Holiday short story reveals that Reine can play the violin better than a professional, conduct better medical treatment than even the official Ratatoskr medical officer, act as a translator, and even pilot a plane. Kotori even notes that she has no idea where Reine obtained these skills to begin with.
- Adaptation Dye-Job: Her hair is a light shade of lavender in the novels, but looks gray in the first season (later seasons are more accurate).
- Artistic License Biology: Reine claims that she hasn't had any decent sleep for 30 years, after consuming an entire bottle full of sleeping pills, saying they weren't effective enough. Even Shido wondered how it doesn't kill her.
- Christmas Cake: If she really is over 30 years old. Though it doesn't seem to bother her, probably because with her reaction to Shido calling her a mother, she probably is or has been married before. And then volume 17 reveals that she, as Mio Takamiya, is Shido's surrogate birth mother.
- The Comically Serious: Her tone never changes (in no small part due to drowsiness), and she has quirks like spontaneously collapsing and her pathological inability to get Shidous name right.
- "Could Have Avoided This!" Plot: She admits herself that if she had told Shido that Kotori's affection towards him had been at the max all along, most of Volume 4's schtick wouldn't have happened.
- Does Not Like Shoes: While she is mostly wearing foot wear in most of her appearance, her Astral Dress lacks footwear like her original self.
- Exhausted Eye Bags: One of three indications that makes her claims of not having slept in 30 years seemingly credible, with the others being putting unreasonable amounts of sugar in her coffee and downing an entire bottle of sleeping pills.
- Foreshadowing: There are plenty of hints implicating her secret identity long before before her official reveal as the Phantom in Volume 16 and Mio Takamiya in Volume 17.
- Right after Shido goes unconscious after meeting Tohka for the first time, a mysterious voice can be heard in his dream. Reine was treating him when Shido woke up immediately after.
- Reine claimed that she hadn't slept for 30 years when she appears to be in her 20s, coinciding with the year when the First Spirit appeared.
- She was insistent on addressing Shido as Shin in-person, as he originally was named Shin prior to his reincarnation.
- She also downed an entire bottle of sleeping pills right after the above statement to no effect. This later becomes a subtle foreshadowing when Kotori revealed that Reine had administered fifty times the recommended dose of tranquilizer for her date and reassures that Spirits wouldn't die from drug overdoses.
- When Phantom is first seen conversing with Kurumi, she has full knowledge about her 12th Bullet which was never revealed to anyone.
- When Origami confronted Phantom after traveling to the past, she noted that her voice sounded familiar. Similarly, Shido confirmed that Phantom's voice was indeed the same as the mysterious voice back in Volume 1
- While Phantom doesn't speak in either of the two seasons of the anime or in the movie, she does speak in each of the extracanonical games that she's in, and it's in those games that reveal that she shares her voice actress with Reine.
- She had mentioned that she had a lover when she was inquired by Tamae near the end of Reine Marriage Hunt short story, and likewise also revealed it to the Spirits when they are purchasing chocolate ingredients for Valentine's Day in Volume 16. Interestingly, she had the intent to give Shido a chocolate gift herself, but refrained from doing so because he would be full from the chocolate received from them.
- Harem Nanny: While Ratatoskr in general is dedicated to helping Spirits, Reine is seen particularly often helping them adjust to everyday life. One noteworthy example is calming down the Spirits, who'd been de-aged by Natsumi and were pestering Shido like the children they now resembled, quickly accomplishing what Shido had failed to do on his own. She then has an odd response when he compares her to a mother.
- Hidden Depths: There's something odd about how she didn't get injured when she and Origami were attacked by a Bandersnatch robot... Volume 16 reveals what it is by showing she and Phantom are the same person. Then Volume 18 tops that as she is actually Takamiya Mio's doppelganger and older alter ego.
- Hyper-Competent Sidekick: She's the go-to person for helping Shido out, and will often do things necessary to help him in his mission to seal the Spirits powers. Though Kotori is on the ground occasionally, Reine is often the only one who provides support for Shido on the ground, while the rest of the Fraxinus crew provide typical Mission Control support aboard the ship.
- Iconic Item: Reine always has a small teddy bear with her wherever she goes, either in the pocket of her outfit or in her cleavage if she has no where else to put it. Where she got it is revealed in Volume 17, where Shido had won it for her during her first date with him in the nearby town 30 years ago and has kept it fondly since.
- In-Series Nickname: Shin for Shido. She doesn't seem to have any problem getting anyone else's name right. In Volume 17, it's revealed that it's the name she uttered of Shido's name when he first introduced himself to her 30 years ago.
- The Insomniac: Hasn't slept for 30 years, or at least she claims. Might be Truth in Television. It's because she is actually the First Spirit, who had been working tirelessly to turn countless girls into Spirits in order to purify the Sephira Crystals. She also has Catapult Nightmares about Shinjis death if she ever tries to get some shut-eye.
- Intergenerational Friendship: She's Kotori's best friend, even though the latter, mature as she is in her black ribbons, is barely into her teenage years.
- Marshmallow Hell: Gave Shido this in order to calm down in Episode 10 after he became anxious unto the other people involved in the battle. It worked, almost like it hadn't been the first time she had done it. Early in Rinne Utopia, Kotori actively shoves him into Reines chest to calm him down. Shidos embarrassed, but Reines perfectly fine with it if it helps.
- Meaningful Name: Has the number zero hidden in her name (as light novels are written vertically, 村雨 令音, 雨 + 令 = 零, meaning zero). Ends up being more meaningful when it's revealed she is Phantom and the First Spirit's alter ego.
- Meganekko: Of the Purely Aesthetic Glasses variety, seeing she's seen with them just as much as without.
- Mission Control: Zigzagged. She is occasionally aboard the Fraxinus, but of all the crew, she's the one that's most often in the field working with Shido, such as when he ran into the Yamai twins while they couldn't contact the Fraxinus due to interference from DEM.
- Motherly Scientist: Acts as a surrogate parent towards some characters, mostly Shido, Tohka, and Yoshino. In one episode, she even plays therapist to Tohka to help her with her feelings for Shido. If the ring present on the necklace of her teacher disguise and her reaction to Shido saying she was like a mother hint anything, she may have actually been a mother once.
- Older Alter Ego: She is a doppelgänger of the First Spirit Mio, who is noted to look younger.
- Older Than She Looks: Reine looks really young for someone who's been more than 30 years old. Then again, her most noticeable features would be her baggy and sleepy eyes.
- Only Sane Employee: Considering her commander's age and attitude, her vice-commander's masochism, and the rest of the crew's incredible incompetence. And even she is Not So Above It All at times, though it's more downplayed for her.
- Physical God: She's the First Spirit, and a being of pure magic that's powerful enough to easily take down the Spirits in the main cast.
- Red Herring: Have you read all those points under foreshadowing? Good, because Volume 17 just threw a huge wrench into all that with a big reveal. She's actually the first spirit, Mio Takamiya, herself, operating under an alias.
- Spit Take: A delayed one, when she first sees Shido and Tohka go on a date.
- The Stoic: She rarely expresses emotion or energy, and most of her interactions are deadpan. Kotori even admits she had never seen her angry before after she shows rage to what DEM did to Mana's body.
- Sweet Tooth: She puts mountains of sugar into her coffee (partly to stave off her drowsiness), and Kotori once bribed her with an offer of 10 limited edition cream puffs.
Vice-Commander Kyouhei Kannazuki
Voiced by: Takehito Koyasu (Japanese), J. Michael Tatum (English)
Vice-commander of the Fraxinus, and a big masochist. When the crew has to make Dating Sim-esque choices, his choices, made purely to fuel his masochism, are the ones being shot down the most.
Despite his masochism, he's revealed to be very good at using the Realizer, which really came in handy when the Fraxinus got attacked. With this skill, he was the former ace and captain of the AST squad when Ryouko was new to the team. He defected to Ratatoskr to find a suitable master he can serve under, and he found one in Kotori. However, he left a wish to be reinstated in case he changed his mind.
- Butt-Monkey: Kotori gives him the short end of the stick every single time, mainly due to his hammy and perverted demeanour.
- The Captain: Formerly of the AST when Ryouko was just a recruit. Also, when Kotori places the Fraxinus under his command, he shows just how capable he is at directing the crew.
- Chivalrous Pervert: He's quite dedicated to his commander Kotori, but at the same time has no qualms declaring his fantasies about her, which puts him on the receiving end of her sadistic streak.
- Comedic Lolicon: He's very lustful toward little girls like Kotori, while expressing disgust toward large breasts. He actually got into a relationship Tamae mostly because she has a childlike figure while legally an adult.
- Crouching Moron, Hidden Badass: He acts extremely perverted, but when push comes to shove, he's a very competent commander and Kotori trusts him to lead if she's ever absent, as seen during the Arbatel's attack on the Fraxinus.
- Dude Looks Like a Lady: He even admits to having crossdressed before.
- The Friend Nobody Likes: Due to his Dating Sim-esque choices influenced by his own desires and tendencies to make things worse (Such as giving Shido a line to complement Kotori how well her swimsuit top looks on her chest.), he is seen as useless by the crew. When Kotori leaves for a meeting and leaves him in command, the rest of crew insists on her coming back as soon as possible. In fact when Kotori checks in with the crew and discovers something is wrong, her first assumption is that he's pissing everyone off. When he's seemingly killed in the Kotori Mystery short story, everyone aboard the Fraxinus admits to not liking him while trying to establish an alibi, and the reason Kotori thought he was dead in the first place was because Reine checked his pulse and said "Unfortunately"; she meant "Unfortunately, he's still alive".
- Large Ham: He's the most bombastic member of the Fraxinus' crew, openly admitting his masochist tendencies and his desire to be punished by Kotori. Surprisingly, he shows scant moments of analytic calmness when the situation calls for it.
- Long-Haired Pretty Boy: His shoulder-length hair goes in hand with his effeminate looks.
- Noodle Incident: While in the AST, he gave his subordinates Cool And Unusual Punishments. According to Ryouko, punishment for first timers was having to cosplay, second timers was having to cosplay and step on him. We don't find out what the punishment for third timers was; all we know is that it's one Ryouko really doesn't want to remember.
- Number Two: To Kotori aboard the Fraxinus.
- Suspiciously Specific Denial: In the filler Hot Springs Episode, when he's trying to convince Kotori to go to the hot spring to stay in top condition. Kotori doesn't buy it, of course, and makes him dig a hole and refill it over and over as punishment. As a Brick Joke, he digs up a hot spring at the end of the episode.Kyouhei: I have no idea what you mean. I have no desire to install several surveillance cameras there. Would someone like me actually fill a hot springs with lenses so I could stare at every inch of that hard, tight body at my discretion, especially that backside?
- Too Kinky to Torture: He might as well exist as Kotori's punching bag. Though he's not too big on the idea of castration or death.
- Tranquil Fury: During the fight with the DEM ship in episode 4 of season 2, while he throws out some perverted dialogue, he is so eerily calm and issues orders so specific that the rest of the bridge gets a bit nervous. The fact that said orders also help them defeat the enemy ship helps.
Members of the Fraxinus crew who participate in the decision making process when the Dating Sim choices come up.
- Bunny-Ears Lawyer: Kotori's introduction of her crew indicates that romance is the last thing any of them should be giving advice on.
- Gratuitous Foreign Language: "Boss" Mikimoto's introductory phrase Mahal kita is Filipino for "I love you".
- Ironic Nickname: "Bad Marriage" Kawagoe, who has been married and divorced five times, has been given the title "Master of Love".
- Otaku: "The Dimension Breaker" Nakatsugawa, the man with a hundred waifus.
- Ragtag Bunch of Misfits: They're a group of odd people that want to help save the Spirits and possess good technical skills, but have questionable dating advice.
- Red Baron: Played for Laughs.
- Shipper on Deck: Their jobs when Shido has to date a Spirit. They even vote which pickup line Shido needs to use during his date!Kotori and the Fraxinus crew: [Cheering in unison] Ask her (Tohka) out! Ask her out! Ask her out!
- Stalker with a Crush: "Deep Love" Minowa, to the extent that the law had to step in to stop her.
- Voodoo Doll: "The Nail Knocker" Hinako Shiizaki is described as "bringing pain to every rival of her love" using these.
Elliot Baldwin Woodman
Voiced by: Joji Nakata (Japanese), Ed Blaylock (English, season 2), John Swasey (English, season 3)
The founder and benefactor of Ratatoskr Machinery, Mr. Woodman appears in Volume 8 to interrogate the captain of the Arbatel. He's said to use an unconventional method of communication and conversation, and is revealed to be one of the three founding members of DEM (the other two being current DEM managing director Isaac Westcott, and said director's secretary, Ellen Mira Mathers), and even worked alongside Westcott before the First Spacequake 30 years prior to the beginning of the story that made him defect from the DEM and start his own organization.
- The Ace: An extremely powerful Wizard. To the point he was the first Wizard created after the Realizer was invented and taught Ellen how to use it in the first place.
- Anti Anti Christ: Elliot's goal is to prevent the world and humanity from falling into Westcott's evil hands.
- Arch-Enemy: Ellen despises him for betraying DEM and wants to be the one who kills him. Volume 18 implies a bit of a Woman Scorned.
- Authority Equals Asskicking: As shown in Volume 15 where it's revealed that he can fight Westcott to a stand still, not to mention being able to sever his arm. All coming from the guy who can stand up from a wheelchair. Even more in Volume 17 when he shows up to fight Ellen looking young and wearing his own CR-Unit.
- Aw, Look! They Really Do Love Each Other: His relationship with Westcott even up to the latter's death in Volume 19.
- Big Good: Kotori, and by extension the rest of the Fraxinus' crew, answers to him, and he opposes Westcott's plans.
- Cast from Lifespan: His CR-Unit Wodan physically regresses him to his prime and allows him to defeat Ellen, but he burns up his remaining lifespan and dies soon afterwards (though Shido would rewrite the timeline and he didnt end up using it again).
- Defector from Decadence: Left the DEM to lay the foundations for what would eventually become Ratatoskr. He outright states that Westcott is his main reason for doing so, although Woodman seems to be still on friendly terms with him. What he doesn't mention until Volume 14 is the specifics regarding the First Spacequake that made him leave. The other reason for him leaving DEM was that he, Isaac, and Ellen, were all responsible for the summoning of the First Spirit, and by extension, the first Spacequake and all the death and destruction it caused. Seeing the effects of that quake was the other reason for his departure from DEM... as was falling in love with the First Spirit
- Fountain of Youth: Being able to transform into his youthful form to fight Ellen in Volume 17.
- Good Counterpart: To Isaac Ray Peram Westcott.
- Technical Pacifist: Elliot is very different from his evil former friend, Isaac Westcott, who also serves as an evil counterpart. While Westcott is a depraved person who seeks to cause war, death, destruction and chaos as possible, Elliot, on the other hand, is a person who is reluctant to kill, seeks to maintain peace, freedom and happiness of the people without sacrifices.
- Very Loosely Based on a True Story: His last name "Woodman" likely comes from William Robert Woodman, one of the founders of the Hermetic Order of the Golden Dawn.
Karen Nora Mathers
Voiced by: Nozomi Nishida (Japanese), Jill Harris (English)Mr. Woodman's secretary, and Ellen Mira Mathers' younger sister. Appears alongside the former in Volume 8.
- Cain and Abel: The Abel to Ellen's Cain. Both are secretaries to their organisations' respective chairmans. In Volume 8 Chapter 5, it's hinted that she and Ellen were already antagonistic to each other prior to the series."There is no problem. I understand my sister and I wont understand each other from years ago."
- Good Counterpart: To her older sister; Ellen Mira Mathers. She's the secretary for the Big Good Elliot while Ellen is the secretary to the Big Bad Westcott.
- Satellite Character: She's largely defined by her devotion to Elliot, even admitting that she left DEM simply because he did.
- Sexy Secretary: Unlike Ellen, she rocks the look without Adaptational Attractiveness, with glasses to boot!
- Red Oni, Blue Oni: The calm and collected Blue to her older sister Ellen's prideful and arrogant Red.
- The Stoic: Unlike her talkative older sister, she's silent most of the time, and the few times she speaks are curt one-liners with an indifferent tone to them.
MARIAThe AI of the Fraxinus EX
- Artificial Human: She gains a physical body in Volume 19 with the help of Nia's restored Rasiel. After the Time Skip, she can do so with just a Realizer.
- Canon Immigrant: When she gets a physical body in Volume 19, it's based on Maria Arusu from Arusu Install.
- Jerkass Has a Point: It's incredibly callous to blame Nia for the loss of her powers (the end result of getting captured, tortured, and made to relive the experience it all just when she was starting to open up to Shido), but there's no denying that Westcott became much more dangerous since he obtained Beelzebub; he found Mukuro in space, tracked down and trashed Ratatoskr's HQ, and forced Kurumi into a "Groundhog Day" Loop to stop constant assassination attempts on Shido.
- Jerkass to One: She can never give Nia a break.