Hayate starts out as a wheelchair-using Ill Girl with an apparent cosplay fetish. The Book of Darkness grants her four servants, the Wolkenritter, whom she adopts as a family. Her kindness towards them turns the once-coldhearted group into nice, caring people. Unfortunately, a Treacherous Advisor has it in for her, and when the Wolkenritter are killed in front of her, she snaps. The Book of Darkness takes control of her and attempts to destroy everything in sight. Luckily, she is able to regain control of herself and revive the Wolkenritter in time to help Team Nanoha neutralize the Book.Subsequently, she recovers from her paralysis and moves to Mid-Childa and joins the TSAB along with Nanoha and Fate, attaining a higher rank than either of them.
Adaptational Badass: In The Battle of Aces. Compare the TV version, who claims she can't even beat Caro in single combat to the Battle of Aces version who goes toe-to-toe with copies of her friends and kicks ten types of ass in her own story mode. Her final stage is a practice fight with the real Nanoha, which she wins, despite Nanoha's attempt to Starlight Breaker her. Justified since in that continuity Reinforce is teaching her to use the Tome more effectively. Hayate also mentions in the introduction to her story mode that Shamal, Reinforce, Nanoha and Fate have been training her.
The Chosen One: Unique as she wasn't chosen in the typical sense, but chosen by a magical tome through random chance. Another unique trait of her being the chosen one is that she was chosen by another individual to be the last master of the book, as the circumstances of her life make her the ideal sacrificial lamb in order to seal the book, classified as a world destroying artifact that reconstructs itself when destroyed, permanently in a limbo dimension.
Cosplay Otaku Girl: She designs the mage armor outfits for her Knights. In fan works, this is subject to extreme Character Exaggeration, to the point that it is the most prominent aspect of her character.
Creepy Cool Crosses: Hayate's Device is the most obvious, but also present on her UNISON'd Barrier Jacket.
Crippling Overspecialization: She can use very powerful, wide area bombardment magic, which the TSAB sends out evacuation warnings every time she's on the field. The problem is, this is all she's capable of doing, and the fact the she needs assistance to even aim her spells makes it more of a disadvantage for her. By her own admission, she thinks even Caro, without access to her dragons, would beat her in a one-on-one fight because of Nanoha's training.
Da Chief: The role she takes in Striker(s) - giving the orders and dealing with the higher-ups.
Demoted to Extra: While still having a very important role to the plot, in StrikerS due to her commander status she gets less action than her two new friends, or even her bodyguards. The few times she takes to the field, she only gets to fight Mecha-Mooks. Force somehow makes it worse by having her get taken out before she managed to complete her first spell. Of course if she does use her powers properly, the incidents would be resolved pretty quickly, but still...
Does Not Know Her Own Strength: In the side-manga, Hayate informs us that mages who have enormous magical power, such as herself, find it very difficult to execute smaller, faster, more manageable attacks. Hayate's mainstay is wide-area bombardment, to the point that the military issues evacuation notices when she takes the field. Her partner, Reinforce Zwei, helps her with fire-control. Which is odd given that Rein Eins' usage of spells like Bloody Dagger shows a capacity for fighting at the anti-personnel level. When she is without Rein she needs the ENTIRE BRIDGE CREW for helping her aim at TARGET SITES MEASURED IN ACRE-AGE!
Expecting Someone Taller: Apparently, if Einhart and the Grendels are to go by, people who don't personally know her seem to bear the assumption that she is an intimidating and serious sorceress befitting of the power and rank she holds. In reality, she is an adorable Bunny-Ears Lawyer who is one of the nicest people on Mid Childa.
Full Potential Upgrade: After A's, the TSAB technicians were having enormous trouble creating a Device to handle Hayate's insane power output. She kept breaking all of them, so in the end she had to create one on her own.
Glass Cannon: Hayate is useless in mage-to-mage close combat and she knows it well, but she's perfectly capable of wiping out entire armies of Mecha-Mooks with her nuclear magic.
Lieutenant Colonel Badass: Her mage rank, SS, is the highest of any character in the series thus far. This is a composite rank though, so it's only an indication of mana capacity and raw destructive power.
Meaningful Name: Her last name Yagami means "Night God". She's the master of the Tome of the Night Sky. Her first name, Hayate, means Hurricane, which could reflect how her magic is extremely powerful but also difficult for her to control properly.
The kanji for her last name actually means "Eight Gods" though.
Never Accepted In Her Hometown: Like Nanoha, is quite famous in the Bureau, apart from those who denounce her as a criminal, but on Earth, is less well-known, and had no friends prior to meeting Suzuka.
Nice Hat: Has a beret when her barrier jacket is active. She seems to ditch it in the Force manga though.
Overranked Soldier: Made Lieutenant-Colonel after at most ten years in service, and let's not even talk about the Improbable Age. This is just not done in Real Life barring very unusual circumstances. Contrast with Nanoha's more reasonable non-Navy Captaincy. Several of the more experienced officers, however, still treat her like a young girl despite her position, and she suggests that rank is merely a "decoration" in the bureau.
On the other hand, Hayate herself easily represents a concentration of raw power equivalent to (or more likely better than) the faux-battalion command she was given.
Parental Abandonment: She is an orphan, economically sustained by a friend of her dead parents. It is revealed Gil thought she would be ideal to awaken the Book of Darkness and be sealed away with it, so that few people would have to mourn her.
Person of Mass Destruction: At least on the same level as Fate and Nanoha at the end of A's. By the time of Striker(s) Hayate's lowest setting is about the same as a bombing run by a squadron of B-52s. Some of her more powerful attacks are easily in the tactical nuke range. She's even referred to as a "walking Lost Logia" in Force.
When she starts using her bombardment spells, the TSAB sends out evacuation warnings.
Red Baron: In Force, the nickname "Living Lost Logia" is mentioned (appropriate enough, considering where she had gained her power from).
Reformed, But Rejected: To a degree. Since she took responsibility for the Wolkenritter's crimes, she's treated as a former criminal, being allowed to serve in the Bureau but facing some suspicion and distrust from people. It's implied that she was made commander of Mobile Division 6 because she would be expendable if it failed.
Resigned to the Call: An interesting case. Her initial reaction to being informed that she was The Chosen One can be summed up with the statement "Sure, I'll be the master." She never intended to use the Book of Darkness despite the limitless power it offered, content that it has provided her with people she can call family. After the Book of Darkness incident, she decides that it would be better if she used her power to help other people, and to atone for the crimes her guardians had committed.
Social Services Does Not Exist: While she did have financial support, Hayate apparently lived by herself before the Wolkenritter arrived. Really, nobody had a problem with the paraplegic nine-year-old living alone?
Squishy Wizard: Claims that even Caro might be able to defeat her in single combat without her dragons. However, it's pointed out soon afterward that despite having difficulty in single combat, she's able to use her power to her fullest potential when surrounded by her allies.
Stay with the Aliens: After graduating from middle school, she moves to live on Mid-Childa. Taking her entire family with her, there's even less that ties her to Earth than Nanoha, and after a visit to Earth for a mission, says that Riot Force 6 is her home.
Stepford Smiler: Acts this way at times, as Shamal notes that she hides her pain from her family.
Terror Hero: As of Force, a mere mention of her name causes the Grendels to give up escaping from Section 6. To put in perspective, the Grendel are infected with a virus that makes them downright immune to magic, but are terrified of her power.
That's an Order: Hayate tries to invoke this on Reinforce twice: the first time to stop her from giving into despair and later to stop Reinforce from sacrificing herself.
Unskilled, but Strong: Has incredibly powerful bombardment magic, but that takes a long time to cast and has little use in close-quarters combat.
To the point that she says in the supplementary manga that she might be able to beat Caro in a fight. If Caro didn't have access to either of her dragons. ...then she realises Caro's been training under Nanoha, and says she wouldn't win anyway.
Wise Beyond Her Years: So far the champion of this trope in all of Nanoha, considering she was the mother figure of her adoptive family at the age of nine. In the movie she even calls Reinforce (who has full memories of her centuries if not millennia of existence) "my child" mere minutes after meeting her.
They are the four guardians born out of the Book of Darkness. The ladies are Signum, Vita and Shamal, while Zafira is a wolf who can change into a wolfman. Their quest is to gather Linker Cores to complete the Book Of Darkness. Like most of the other antagonists in the show, they are very much Antivillains - they want to complete the Book of Darkness only to prevent it from killing Hayate.At the end of the second season, they become good guys and later move to Mid-Childa with Hayate. Joining them is the actual Artifact of Doom, the Book Of Darkness, now known by its real name, the Book of Night Sky, and Reinforce Zwei, a unison device similar to the Book of Darkness' original AI program.
Tropes common to the Wolkenritter:
Anti-Villain: In A's, they seek to save Hayate's life while minimizing harm, and according to Signum in Sound Stage 3 of A's, planned on turning themselves in after saving her.
Battle Butler: Inverted. The Wolkenritter's first and most important duty is to defend the Book's master or mistress. They just happen to have minor domestic skills as well.
Brought Down to Normal: Downplayed but present. In Striker(s), Shamal notes that she and the other Wolkenritter have lost their immortality, and are content with this. Not surprising, seeing as after the corruption of the Tome, their immortal lives were more like a series of reincarnations each one only lasting as long as their master, which typically wasn't very long. They also lost some of their memories between each cycle.
It was also implied that other aspects of their powers also will be reduced with time like their resillence, stamina and strength. It finally took it's toll during the FORCE manga where they're noticeable weaker and frailer than in past seasons where their bodies were able to take much more punishment.
Good Costume Switch: Back when they were serving masters in ancient Belka who wanted the book's power, their armor looked "rough," according to Hayate, and Vivid shows them wearing barrier jackets that look like typical plate mail. Justfied because each master designs the armors they wear.
Gratuitous German: Their armed devices, except for Zafira, since he doesn't use one. In The Movie 2nd A's, the devices got more lines, most notable Graf Eisen and the Book of Darkness.
Our Master Right or Wrong: They are bound to obey whoever was the master of the Book of Darkness, no matter how unreasonable the master was.
Overshadowed by Awesome: Hit with this trope during most of the events in FORCE, including Hayate, Agito and probably Rein.
Really 700 Years Old: The Wolkenritter date to some period in Ancient Belka. Actual age is vague but is at least centuries and probably more like millenia. Vita, of course, doesn't look the part at all, but none of the others look over the metaphorical hill either.
Theme Naming: Signum, Vita, and Zafira are model names from the German car manufacturer Opel. Shamal is a model from Italian car manufacturer Maserati.
What Measure Is a Non-Human?: The Wolkenritter's previous masters apparently didn't consider them to be people. Hayate does think they're people though, and that makes all the difference, turning them from coldhearted killers into a happy family.
Who Wants to Live Forever?: After being freed from the curse of the Book of Darkness, they slowly show signs of being more human, as their immortality had disappeared and their healing and resilience started deteriorating. A conversation between Shamal and Vita during StrikerS state that all four of them are aware of this but don't particularly care about it, since all of them want to spend their last life with Hayate.
"I'm an old knight. [...] All I can teach them is to get up close and slice the enemy to pieces."
The Stoic leader of the group, armed with the flaming sword Laevatein. She lives for battles and as a result is the best fighter among Wolkenritter. Fate's Worthy Opponent. Later the two become close friends.By Striker(s), she's moved to Mid-Childa with Hayate and the other Wolkenritter, and become one of the vice captains alongside Vita of Mobile Section Six. Her callsign is Lightning 2.
Somehow defied in Force, where Signum didn't show any visible motivation in pursuing a rematch with Cypha even after the Huckebein swordswoman utterly trounced and near-killed her in battle. However, it's worth pointing out that she did seem eager to continue their rematch in chapter 25.
Cool Big Sis: Becomes sort of this during StrikerS but specially to Fate, Vice and Alto. In Force she seems to be heading to be this for Tohma as she feels responsible for not being able to save him (see Failure Knight below). More or less confirmed in The Gears of DestinyPSP game where Tohma calls her Signum-neesan.
Defeating the Undefeatable: Though her fights tend to end in a draw, she's never lost a battle as far as we know, until chapter 7 of Force, where Cypha of Huckebein nearly kills her.
Does Not Know Her Own Strength: The can't do smaller tasks variation. Once she refused to heat up water for bathing because of that. Also breaking your own freaking sword with the sheer force of your attack is a truly impressive proof of your strength.
She also had one with Fate during A's, until a later Sound Stage revealed that she kicked Fate's ass during most of their Lighthearted Rematches a few months after A's. In The Battle of Aces, Fate suggests that she lost eight out of ten of their sparring matches.
Failure Knight: During FORCE chapter 20 Signum talks about the irrepressable remorse that comes with defeat when there are important things at stake. All while she apologizes to Tohma and Lily, twice, for being unable to save them from Cypha, showing that she indeed feel guilt about her failure.
Germanic Depressives: One of the most serious characters among the cast, even compared to the other Wolkenritter. Hayate and Fate attempt at various points to get her to relax.
Get A Hold Of Yourself Woman: Signum delivers a Signum Punch to Teana in order to straighten her up at one point, saying that she will get spoiled if Nanoha listens to her complaints.
Notably Teana was launched meters back and Signum assures the rest of the shocked crew that it's okay because she "held back".
Handicapped Badass: She managed to raise from bed and even have a sparring match with Tohma right of the bat but, while still a decent fighter, her body hasn't fully recovered yet and it's even implied that the injuries sustained in her fight with Cypha could leave permanent sequels on her... and the next time she fought Cypha, Signum utterly trounces her.
Large Ham: Her device Laevatine tends to pronounces his words in this way.
Last Name Basis: Refers to Fate as "Testarossa" even after Fate changes that to her middle name after being adopted by the Harlaowns. Interestingly enough, she refers to most of her other friends by their first names.
Lightning Bruiser: Signum keeps up with Fate's Sonic Form with ease. She also trashes pretty much anything that's looked at her funny.
Seeing as how the effectiveness of her defensive and offensive powers/skills got ruined by the new rules installed by the Force manga Signum will probably be in need of adapt a new hit-and-run strategy from now on. Passing into Fragile Speedster territory in order to not be kicked out of the Competence Zone.
Confirmed in chapter 20 as Signum fights against Tohma and leaves almost all of her protection in the hands of Agito and Laevatein, preferring to parry and dodge than turtling like in past battles.
Logical Weakness: The nigh-undefeatable Knight of the Sword does have one key vulnerability — as a magical construct, Anti-Magic weaponry is especially dangerous to her. Brutally demonstrated once the Huckebein show up.
Not So Stoic: Pounding a wall in frustration after hearing about Hayate's illness being potentially life-threatening, and shedding a single tear in response to Fate's suggestion that they could still be friends. She also doesn't exactly take it very well when Vita calls her "Boob Demon", or when her Mysterious Protector intervenes on her behalf during her third fight with Fate.
Stone Wall: Her combat style when fighting opponents of equal power. She wears down their energy by turtling, then when they're out of steam and leave themselves open, knocks them flat. Most visible in her second duel with Nanoha.
Heavily subverted in Force where Cypha of Huckebein slices through her defenses like a hot knife on butter. Having a Logical Weakness kind of sucks like that.
Worf Had The Flu: Actually inverts this during her rematch against Cypha. Despite technically still being under medical rehabilitation, she sends the so-called Ace fleeing in the span of a single chapter.
Voiced by: Asami Sanada (Japanese), Elisabeth Rick (English)
"The Knight of the Iron Hammer, Vita, and the Steel Count, Graf Eisen. There's nothing in this world we can't destroy."
The Child of the bunch. She develops not-so-obvious romantic feelings for her Mistress. She wields Graf Eisen, an Expy of the GoldionHammer. During the 2nd season, she serves as Nanoha's rival.By Striker(s), she's become a combat instructor on Mid-Childa, and is one of the vice captains of Mobile Section Six alongside Signum. Her callsign is Stars 2.
Badass Boast: From Striker(s): "This is what Eisen and I are best at. You know that? Destroying and smashing. The Knight Vita of the Iron Hammer, and the Steel Count Graf Eisen. There's nothing in this world we can't destroy."
The Berserker: Vita appears constitutionally unable to retreat from a fight unless joining it or continuing it puts the other Wolkenritter or Hayate at risk. Her strategy in combat boils down to getting right up in someone's face and hitting them with Graf Eisen until they stop moving.
Big Eater: Partly because of her being a Belkan knight, which tends to result in users having to eat more than Mid-Childian mages. However, she also eats a fair amount even when she was living with Hayate and not fighting, and claims that it's because she's growing.
Cynical Mentor: To the trio in Force in Chapter 18. She basically tells them she is training them so they don't drag down the main team and wasn't keen on the idea of working with them until Nanoha convinced her due to their instability.
Death Glare: Gives one to Nanoha when she encounters her when she's visiting Hayate in the hospital.
Determinator: She is quite possibly an even bigger determinator than Nanoha, or at least it looks more impressive since she has insane endurance. Near the end of Striker(s), she is fighting through hordes of combat machines, getting stabbed right through the chest, and upon realizing that they was the same type of drones that injured Nanoha she completely flips and wrecks them all. Then she arrives at the ships engine heavily injured, tries to destroy it with no success, only to be greeted by automatic defense systems. And her response?
Good Thing You Can Heal: Tends to get fairly badly injured somewhat regularly, but manages to recover every time. However, in Striker(s), it's revealed that since she separated from Reinforce, it has been taking her longer and longer to heal.
Gratuitous German: Both, Vita and Graf Eisen. While Vita's attacks are German compared to Signum's Japanese attack names, Graf Eisen has the most lines among the Belkan Devices of the Wolkenritter.
Just a Kid: Even after becoming aware of her truenature and true age, Nanoha still often treats her like a kid, addressing her as "Vita-chan", petting her on the head, and in one case carrying her in her arms when she's asleep, because she didn't want to wake her up, much to her annoyance.
Know When to Fold 'Em: During her third encounter with Nanoha, she decides to retreat because as she cannot absorb her Linker Core again, fighting her would be a waste of energy.
Little Miss Snarker: Quite willing to point out when she thinks someone is being stupid, especially with regards to the forwards.
Made of Iron: She may very well have the most endurance and fortitude out of all the main characters.
Mighty Glacier: To quote her and Graf Eisen - "There is nothing in the world we can't destroy". She also happens to be the character with the greatest endurance and durability, despite having the body of a child. While her movement speed isn't bad, her attacks are slow and heavy and she has no dodging skills to speak of.
Sergeant Rock: More critical of the forwards' performance than Nanoha is, and occasionally suggests that Nanoha is being too lenient, but cares for their development. Also when Vita tells you to shield, you shield, or else get hammersmashed.
In her second fight with Nanoha, Nanoha surrounds him with a lot of Magic Missile and she perform Panzerhindernis to protect herself while saying: "Are you stupid?! There's no way you control all these bullets!" A moment later, the bullets start speeding up, and the Panzerhindernis slowly took damage. Good job.
In her third encounter with Nanoha, she was using Eisen Geheul to distrat Nanoha, giving her time to escape her. After a while, she muses, "OK, this is far enough...." Cue Nanoha charging up Divine Buster. She was saved by a third party intercepting the beam and bind Nanoha.
In StrikerS, "I'm almost there. I still have cartridges. I'm fine. It'll be easy." Cue invisible EliteMecha-Mook stabbing her through the back and her having to prove just how big a Determinator she is.
Several episode earlier, she boast, "The Knight of the Iron Hammer, Vita, and the Steel Count, Graf Eisen. There's nothing in this world we can't destroy." Yes, she manages to live the reputation, But it is clear that she wason her last legwhile acomplishing it.
Tsundere: Can be irritable, blunt and often rude, but is intensely devoted to Hayate, and later, to Nanoha. In one scene, she reassures Shamal that she "won't make a certain worrywart knight of the lakes who's terrible at cooking cry".
Combat Medic: While Shamal normally keeps out of combat, she's hardly helpless in other fields. She has the ability to stick her hand through you and rip out your magic. From a mile away. Or at least she did back when they still had the Book of Darkness.
Expy: She looks like what Ritsuko Akagi might look like if she were in the Nanoha-verse. This is especially apparent with her first appearance in Striker(s), when she's wearing what appears to be a white doctor's coat. Considering the number of mecha anime shout outs in Nanoha, it could be intentional.
The Face: Of the Belkan Knights. Look at the contrasts between her and her fellows: the most feminine, the one who can't cook, the Team Mom. She's also Mission Control because her magic is focused on communication and teleportation.
Japanese Honorifics: Uses them on most people, and the only one of the Wolkenritter to consistently do so.
Lethal Chef: This was originally an Informed Flaw - on one of the two occasions the Wolkenritter actually taste her cooking, Signum and Vita admit that it's not as good as Hayate's cooking, but still not bad, while Hayate likes it. It wasn't until the PSP fighting game, released four years after her introduction, that we received visual confirmation of her cooking skills.◊
Bit of an oddball — he's not only The One Guy of the Wolkenritter and Hayate's family, he's a Non-Human Sidekick. His specialty is said to be a Barrier Warrior. He forms a rivalry and later friendship with Arf.In Striker(s), he apparently ends up as something of a big canine babysitter for Vivio, and is only seen in his humanoid form once, in the final panel of Chapter 15.In Vivid, he is training children in martial arts. One of his best pupils, Miura, is set to compete against Vivio in the Interdimensional Tournament.
Demoted to Extra: Loses some of his screentime in Striker(s) but really gets hit hard in the Sound Stages. In the first and second sound stages of A's and StrikerS he's either away for most of the story or absent for some reason. On the other hand, in Vivid where he's the trainer of Miura Rinaldi/Linard, he appears more frequently and talks more than in his entire screentime on StrikerS. Still a support character but with a much better treatement.
Evil Counterpart: Once again not really "evil", but he is one of the antagonists for season two and pretty much a male version of Arf, made especially blatant when they fight in their animal forms.
Familiar: Insists on being called a "Guardian Beast", to which Arf retorts that it makes no difference.
Friend to All Children: Especially pronounced in Sound Stage M4, when he teaches children martial arts, and reveals that he gave rides to Hayate and Nanoha in the past, around the time Hayate was practicing walking and Nanoha was in rehabilitation.
The Quiet One: Erio and Caro don't even realize that he can talk until their second mission. Even Hayate notes that he doesn't speak often.
Stern Teacher: Has shades of this in his instruction of Miura in Vivid, as he notes she will get quite the talking-to after she barely wins her first round despite losing most of her life in the opening moves.
Formerly known as the Book of Darkness, and before that, the Book of the Night Sky until the defense program, also known as Nachtwall (movie only), was corrupted and the book's entire purpose changed. After Hayate is absorbed into the Book of Darkness, she manages to reach out to her, giving her a new name. She sacrifices herself for Hayate's sake after enabling the Wolkenritter to live on outside of her. Generally believed to be the most powerful character in the franchise.
Big Bad: Technically the main "villain" of A's. Technically. But ''Nachtwall'' fits this definitely who is also a Bigger Bad before its confirmed that Nachtwall is the cause of the eternal cycle of destruction the Book is best known for.
Brought Down to Normal: The option presented in the PSP games as she started slowly but surely losing her powers as a consequence of being separated from the defense program and by the time of the 2nd game she's considerably weaker, still a capable mage but nowhere close to the titanic powerhouse she used to be.
Dark Is Not Evil: At some point in her long existence, she was corrupted for evil purposes and thus has no control over her actions. Before that, she was simply a tool to gather various magical knowledge.
To prevent Hayate's life from being threatened again, and to enable the Wolkenritter to exist outside of the book.
Defied in The Battle Of Aces, where, depending on the story path, Signum, Vita, or Hayate are having none of Rein's plan to absorb the Dark Pieces and sacrifice herself. Then again, even if the sacrifice does not take place, Reinforce does not have much time left.
In Spite of a Nail: In The Battle Of Aces, realizes that she cannot serve as Hayate's Unison Device forever, and asks Hayate to make a new one. She and Hayate are both aware, although neither says anything to the other, that she will disappear in the relatively near future.
Power Fistof Evil: In the movie adaptation, she uses Nachwall, the corrupted defense program of the Book of Darkness, as a gauntlet-like weapon.
Purposefully Overpowered: During her story path in the Battle of Aces video game, she becomes Unison Reinforce, i.e., Reinforce with Hayate acting as herUnison Device, giving her all the passive skills in the game. It's as broken as it sounds.
Hayate's Unison Device, who specializes in ice magic. She was created about two years after the Book of Darkness Incident, but is introduced in the last scene of A's. She can fuse with Hayate, Vita or Signum to increase their power. She typically exists as a small flying girl a few inches tall, but can transform into a normal-sized young girl. Commonly known as "Rein". Possibly the only Device that has its own Device: her Book of the Azure Sky.
The twin catgirlfamiliars of Admiral Gil Graham. Served as Chrono's magic and martial arts teachers. They turn out to be the mysterious masked men who aid the Wolkenritter, and are working to help them complete the Book of Darkness so they can seal it away as part of Graham's plan.
Carnivore Confusion: Lotte can tell that Yuuno's a ferret, and being a Catgirl, asks if she can eat him. It's somewhat ambiguous what she means by that (consider how she treated Chrono) and either way she was kidding. Probably.
My Master, Right or Wrong: Willing to help Graham carry out his plan, and seem to have fewer reservations about it than he does.
Mysterious Protector: They initially seem to be the Wolkenritter's allies, but are actually using them to complete the Book of Darkness.
Oh Crap: After Chrono both disables and unmasks them, with a spell that neither of them taught him.
Shut Up, Kirk!: When Chrono tells them that their plan is illegal, Lotte angrily insists that innocent people, including Chrono's father, have died because attempts to stop the Book of Darkness have been constrained by the law. Graham, who has accepted that Chrono has thwarted his plan, cuts her off.
Sibling Yin-Yang: The hyperactive and playful Lotte is Chrono's physical combat instructor, while the more reserved Aria is the magical instructor.
Taking the Heat: Claim that the plan was entirely their idea until Graham points out that Chrono knows otherwise.
An admiral of the TSAB, who helps support Hayate. It turns out he planned for her to awaken the Book of Darkness and seal her away with it. His plan doesn't work out, and he resigns after the incident is over.
Anti-Villain: Type III; he's committed to stopping the Book of Darkness once and for all, and sees sealing its innocent young master away for eternity as an acceptable price to pay, even if he's not happy to do so.
Covert Pervert: He doesn't display it, but most characters who have familiars have only one, and there's little to no sexual subtext. Graham has a pair of horny catgirl twins. You do the math.
Even Evil Has Standards: He believes that making Hayate happy until she has to be sealed away is the least he can do for her, although he also concedes that's a hypocritical gesture. He also doesn't seem to care for Lotte bringing up Chrono's father when saying that a lot of people died due to the TSAB being bound by the law in the fight against the Book of Darkness.
The Plan: Graham, after discovering Hayate is master of the Book of Darkness, plans to activate it on a world nominally beyond TSAB control and then seal her away by freezing her so that the Book cannot reincarnate elsewhere. He probably didn't count on his plan not working, or that a bunch of overpowered 9-year olds could destroy the defense program at the root of the problem.
Reasonable Authority Figure: The closest thing Fate has to a probation officer, and he puts no restrictions on her actions so long as she does not betray her friends or those who believe in her.
Traitor Shot: The camera lingers on his face after his introductory scene, showing that he's slightly disturbed by the revelation that Chrono is handling the Book of Darkness case. This is the first hint that he's hiding something.
Strong Family Resemblance: To her son, Griffith, who becomes one of Hayate's subordinates. Their hair is the same color and has similar bangs, and they borh wear glasses. Griffith lacks her forehead mark, though.
Voiced by: Kayo Sakata
Mariel Atenza, commonly referred to as Mary, is the head of the precision engineering section of the TSAB Main Branch Engineering Division, who appears briefly in A's and Striker(s) and is mentioned in Vivid.
The Engineer: Mariel is responsible for the maintenance of Nanoha and Fate's Devices, as well as for performing medical checkups on the Combat Cyborgs Subaru Nakajima and Ginga Nakajima. She is the one who constructed Vivio Takamachi's Device, Sacred Heart.