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Characters / Dungeon Keeper Ami Ami Mizuno

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Character subpage for Ami Mizuno, the primary character from Dungeon Keeper Ami.

Be aware that some Late-Arrival Spoilers will be unmarked. Read ahead at your own risk of being spoiled.

Keeper Sailor Mercury, Empress of the Avatar Islands
The most dangerous Evil Overlord there is. note 
Click here to see her Sailor Guardian and normal form 
Click here to see her in her Horned Reaper outfit 

"What I want to do and what I am forced to do are, unfortunately, very different things. I wish I could just find a way home and forget all about this dungeon keeper business, but," Ami looked at the ground, clenching her fists, "there are so many complications that I need to sort out first."Chapter 38: The Newest Recruit

Hero Protagonist of the story, but a Hero with Bad Publicity. Ami Mizuno was originally a somewhat sheltered rich girl renowned for her genius intellect, with a secret identity as Sailor Mercury, the most analytical and smart member of the Sailor Guardians to join Sailor Moon in the battle against the Dark Kingdom. That is until an inter dimensional chase of a dark general goes wrong, and she finds herself trapped in an abandoned dungeon with a Horned Reaper who offers her a deal. If she became a Dungeon Keeper, she could get the necessary power to escape.


Unbeknownst to her, once she became a Keeper her soul entered the realm of the Dark Gods, meaning that she would not be able to go back home until she got her soul back. And so, she began her journey in a world full of Heroes who want to slain her for being a Keeper, and fellow Keepers who want to kill her for her good intentions; while hoping to find some way to get her soul back and come back home.

  • Actually a Doombot: Thanks to her Golems, Ami has survived numerous assassination attempts and surprise attacks with nothing more than a scare for both herself and her would-be killer.
  • Ambiguously Bi: Was this for a little while, due to getting Malleus' memories mixed with her own and vividly remembering the pleasurable experiences he had with women.
  • Animorphism: By virtue of Demonic Possession, Ami has the ability to turn into mice and crows.
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  • Anti-Hero: Only to be expected from a genuine hero that has to step up her cynicism to keep up an evil business while still trying to do good.
  • Audience Surrogate: Because she comes from another world, Ami is constantly asking questions about how things work in this new dimension, and compares it with her own mostly mundane experience on Earth.
  • Bad Powers, Good People: By virtue of being a Keeper, Ami has access to a whole repertoire of evil spells, powers, contacts and hired underlings. Even with the full toolset of an Evil Overlord, she still chooses to defend the innocents and fight for justice.
  • Badass Adorable: Her reputation puts her amongst one of the most powerful and dangerous characters in the universe, while still being a fifteen year old girl in a sailor senshi uniform.
  • Badass Boast: When she manages to get over her shyness and gentle demeanor, she's prone to throwing these.
    Underworld Guard: "B-back! If you harm me, we will c-come after you too! You c-can't handle us!"
    Keeper Mercury: "You know who else thought that in the last four days alone? Keepers Zarekos, Morrigan, Arachne, Alphel, and Nero. Guess who's still here?"
  • Badass Bookworm: Most of her knowledge comes from books, experiments, analyzing, and studying. And she uses all that knowledge to surpass her opponents, surprise them and always come up with a way to come out on top of every challenge.
  • Baldness Angst: After an unpleasant encounter with the Dark Gods, she came back bald and had to wear a pointy hat to hide it.
  • Benevolent Boss: Ami is probably the first Keeper who doesn't actually consider her minions expendable. She also goes out of her way to avoid the traditional discipline techniques. This is considered a particularly naive weakness by anyone familiar with Keeper tactics and Underworld customs.
  • Berserk Button: Crowned Death managed to find her only known one so far. Do not pluck the eyes of thousands of people, most of them children, to make them more submissive sacrifices.
  • Beware the Nice Ones: She hates being harsh or punishing her employees, but won’t stand them disregarding lives as expendable or attacking innocents.
  • Big Damn Heroes: She interrupted a jury trial, stood on a Light-based truth detector and saved Snyder from a possible life of imprisonment for treachery.
  • Bookworm: Called one, by the Avatar and Tiger, due to her predilection for research.
  • Boyish Short Hair: Compared to her sailor senshi teammates and other women in the realm, anyway.
  • Broke Your Arm Punching Out Cthulhu: Directly clashing your will against a god's tends to be rather painful and risky.
  • Breaching the Wall: Ami is able to intrude on fortified walls thanks to her Keeper spells.
  • Bubble Gun: Her Shabon Spray Freezing has her shooting ice-based bubble projectiles at her enemies.
  • By the Power of Grayskull!: It's not often that Mercury gets turned back into her human form. But when she does, you can expect to hear a "Mercury Power, Make Up!" from her.
  • Can't Hold Her Liquor: After refusing alcohol for a while, she finally agreed to drink a bit in a victory feast. She got drunk and became possessive of Jadeite, and even modified her Reaper spell to be more fitting to her body in an attempt to seduce him. Luckily, the magic alcohol left her body before she could use the spell in public.
  • A Child Shall Lead Them: When she gets her own lands, she becomes this, as she's 15, and so, not an adult.
  • Clothing Damage: She constantly has troubles with her clothing staying in place. Whether because her golems don't come with clothes, because she was sprayed with blessed water that counters conjured clothes or for some other wacky hijinks that might ensue. Luckily for her, her Sailor Mercury transformation always gives her a new set, but this only further magnifies her hated Memetic Molester reputation.
  • Color Motif: Blue. Its the color of her hair, her eyes (when her red eyes are not covering them) and her uniform. As such, her dungeons take on a bluish aura, her imps fortify it on blue tones and everything that stems from her magic has blue motifs as well, such as her golems.
  • Combat Compliment: She compliments a dwarf that managed to stab her on a golem body, startling the dwarf who thought he fatally wounded her.
  • Combat Medic: Ami doesn't know much actual healing magic, but knows some other spells that can work in a pinch- and unlike Snyder, she's willing to get into the thick of it from time to time.
  • Cool and Unusual Punishment: In order to punish insubordination, she had to torture an orc who tried to kill Cathy to get a Klingon Promotion, and a dark mistress who literally asked to be punished. She made sure that nobody was watching her, and drained their life force until they were rendered unconscious. Then she smeared the whole chamber with imp blood, spent a couple of hours reading, and when they woke up she hit them with a fear spell and then told them that she wiped their memories from all the horrible atrocities she did to them so every session can be as horrible as the first.
  • Corrupt the Cutie: She has constant inner struggles about her actions and motivations. In essence, she's a magical girl who wants to get back to her world and stop evil from hurting innocents. But the means and distances she's willing to go for that objective, plus the constant horror and bloodshed she has to witness and take part in, constantly clash with her identity as a warrior of justice.
  • Covert Pervert: Even though she is embarrassed about the Power Perversion Potential her powers provide, she does think "naughty thoughts" about her crush, as said in "On The Move":
    Tiger: "Come on, let me go, I'll be good! I didn't even complain when you were thinking naughty thoughts about general Jadeite!"
    Ami: "Stay out of my head!"
  • Crush Blush: Once she realizes that she has a crush on Jadeite, she can't even look at the general without blushing. This gets better with time though.
  • Curtains Match the Window: When her red eyes mellow enough to disappear, her eyes are the same tone of blue as her hair.
  • Cute Witch: She has been called a witch by the survivors of the Crowned Death. Coincidentally, she's also been called cute and got many lecherous glances from the same survivors, especially boys her age.
  • Dark Is Not Evil: Ami finds herself in the unpleasant position of being the only non-evil Keeper in the world, and cannot convince anyone on the side of Good about this at all.
  • Dark Magical Girl: She's a magical girl whose stronger powers derive from much more sinister forces.
  • Determinator: No matter how much the world hates her, how much the good guys want to imprison her forever and the bad guys to destroy her, Ami WILL do her best to protect the innocents and come back home alive.
  • Did You Just Flip Off Cthulhu?: Part of her plan of attacking the High Temple of Crowned Death involved her personally distracting the god of death himself.
  • Did You Just Punch Out Cthulhu?:
    • The Underworld's reaction when she defeated the Horned Reaper in hand-to-hand combat!
    • The entire world's reaction when she managed to defeat and subdue the legendary Avatar.
    • Just about everyone's reaction when she defeated an Incarnation of Crowned Death by eating it.
  • Distracted by the Sexy: When she realized she was developing a crush on Jadeite, she started avoiding him for fear of getting too distracted or confused about it. After talking with him and reaching an agreement, she got better with it, but her mind and eyes still linger on the general from time to time.
  • Don't Call Me "Sir": She insists that her advisors should only address to her as Empress in front of her troops or in formal gatherings, since she's not used to the title and wants to give her friends Friendly Address Privileges.
  • Eating the Eye Candy: Has to stop herself from scrying on Jadeite’s private quarters when he’s changing or getting ready to sleep.
  • Elemental Hair: Blue-haired water / ice mage.
  • Emperor Scientist: She's a legitimate empress who favors using science and the scientific approach towards all of her projects.
  • Enemy Scan: Thanks to her visor, Ami is able to scan all friends, foes, magical artifacts and even her surroundings at all time.
  • The Engineer: A rare protagonist example. With her knowledge of technology and magic, Ami created various machines that won her many battles and keeps doing it to this day. Her most well-known example are the reaperbots, goblin-piloted little Mechs resembling reapers, but other lesser known examples are her gem furnaces, or electrical generators fueled by wind or geothermal heat.
  • Even the Girls Want Her: Her infamous and exaggerated reputation as an extreme deviant makes her especially attractive to dark mistresses.
  • Evil Costume Switch: Her decision to wear an Evil Overlord uniform instead of her Sailor Senshi fuku might count as this. Her Sailor Senshi fuku changing from white to black with evil details on its own after she starts studying necromancy definitely counts.
  • Evil Genius: She's seen as this by her most veteran opponents, who remain alive exactly because they avoid her.
  • Evil Makeover: She gradually integrates more and more of the expected visuals on herself; from her red eyes to her clothing.
  • Fake Arm Disarm: When experimenting with the Light’s power wielded by dark wielding gloves, the unexpected results cut her arm off. Luckily, she was in a golem body at the moment.
  • Fake First Kiss: With Jadeite when he manages to find a temporary cure to the Crowned Death prisoners' blindness.
  • Feel No Pain: Whenever Ami is possessing a Golem body, she losses the ability to feel physical pain. She’s still vulnerable to mind attacks, and still cringes every time she realizes that, had she been in her real body, she wouldn’t have survived certain situations she got through.
  • Final Battle: Is eventually capable of invoking this. After defeating Keeper Nero, Ami got access to his Armageddon spell, giving her the power to summon all creatures linked to a dungeon heart in the vicinity to her own dungeon heart for a final battle.
  • Fist of Rage: Her reaction when she found out that Crowned Death had plucked the eyes of thousands of innocents to make their sacrifices easier to handle.
  • Fog of Doom: Her Shabon Spray covers an area around her in a mist that only allies can see through. She also gets access to a more offensive, Keeper-powered variant Corrupted Shabon Spray that actually harms enemies who inhale it or are caught in it.
  • Foolish Sibling, Responsible Sibling: The dark overlord Responsible Sibling to Tiger’s prankster and childlike Foolish Sibling.
  • Friend to All Children: Ami has a soft spot for children and their families in general. If she sees them tortured or harmed in any way, she gets enraged to no end. Once she finally had the chance to interact with a little girl, she realized how much she scared her, so she just gave her cookies and designated a caretaker for her.
  • Frontline General: In the first few arcs she tends to be deeply involved in each battle. Later on, as she gains stronger and more reliable minions she learns to delegate more, but as one of the strongest fighters in her army she still tends to get her hands dirty.
  • Gadgeteer Genius: She uses both her scientific knowledge and her multiple fields of magic to produce technological advancements that hasn't been introduced in the fantasy realm. She even had her friends on Earth scan some books for her so she could replicate even more complicated technology.
  • Gentlewoman And A Scholar: Despite her vast knowledge on many fields of magic, science, culture and mathematics, she's very modest and doesn't look down on anyone who's not as smart as her. She tries her best to treat everyone with the respect they deserve, and doesn't mind repeating what she said in simpler terms for everyone to understand.
  • Giant Waist Ribbon: Her Sailor Senshi outfit has one.
  • Giggling Villain: Featured in A Fitting Punishment and played for both humor and Fridge Horror. Marda, a rebellious troll leader had insulted and defied Mercury on multiple occasions, had to be disciplined. Mercury sent her on what amounted to a suicide mission, teleporting her off alone with no time at all to prepare, and with no backup (there was little on the island in question that could actually pose a threat to the powerful Marda, but most of her other minions wouldn't realize that). Mercury then scrys on her to discover that she is already plastered with mud and drenched in a torrential downpour. When Mercury comes back to herself, one of her advisors informs her that 'the giggle was a nice touch'. Except, Mercury doesn't remember giggling, and the nature of being a Keeper makes this worrisome.
  • Girls with Moustaches: After trying to fix her temporary baldness with a beard-growing spell fixed by Torian, Ami learned to Never Trust a Hair Spell.
  • The Glorious War of Sisterly Rivalry: The Smart Sister to Tiger’s Beautiful Sister. Due to Ami’s memories and appearance giving Tiger a severe Loss of Identity, the latter has developed an inferiority complex against the former. While Ami is serious, smart and reserved; Tiger is brash, fit and a tease.
    From Chapter 127: On the Move, when Ami is possessing Tiger:
    Ami: "If I could trust you to behave reasonably, then I wouldn't have to do this!"
    Tiger: "Being stuck in here with you without control is punishment enough."
  • Go-Getter Girl: She constantly tries to excel on everything she tries and does her best to be liked by other people. She groans every time she has to rest, and feels bad about everyone hating her upon meeting her for her Keeper status.
  • Goggles Do Something Unusual: Her visor shows her different data and analysis of her surroundings and what she's currently looking at, as well as warning her of possible dangers.
  • Golem: Their creation is one of Ami's research breakthroughs. Various golems play a very important part in her plans, not the least of which is acting as her main troops, so that her living employees don't come into harm's way unnecessarily, or using them as decoys to not have her real body exposed to danger all the time.
  • Good Is Not Soft: Don't push Mercury too hard. She has killed Keepers in cold blood because of the pure hatred their horrible actions awoke in her.
  • Healing Hands: In here, she applies her healing spell through her hands, when "she wrapped her right hand in the green glow of her healing spell".
  • Heroes Prefer Swords: Discussed and played with. Ami started training with a short sword because it's the weapon Cathy was most experienced at, and because the group explored all other alternatives and realized that it was her best bet against the Horned Reaper.
  • Heroic BSoD: At one point, Ami is forced to mind read the freshly-defeated Keeper Malleus in order to learn how to create new dungeon hearts - a piece of information critical to her further progress. At first she didn't mean to do anything but glean that info and leave him be, but as she searched his mind she couldn't ignore his other memories. Accessing them, she couldn't turn away. They were the memories of a sociopath who had been active for hundreds of years. Living through these memories was enough to give Ami a heavy PTSD. Furthermore, once she had the info she was looking for and stopped her possession of him; she promptly executed him because she couldn't allow such a monster to live. This was the first person she ever killed, so this act only added to her trauma. Following this episode, she kept having paralyzing flashbacks while awake and horrible nightmares when asleep. This state was finally ended when the Light used its power to heal her mind when she visited their temple.
  • Hero with Bad Publicity: It's hard being taken seriously as a defender of the innocent when those of your occupation are more-or-less an Evil Overlord by nature.
  • Ice Magic Is Water: As in her original show, Sailor Mercury, a Sailor Senshi with water-based attacks, has her ice-based attack, "Shabon Spray Freezing".
  • An Ice Person: Being Sailor Mercury makes ice and water her default elements.
  • I Have Many Names: While her real name is Ami Mizuno, her secret identity is Sailor Mercury. For the rest of the world, she’s Keeper Mercury. And after getting a title by the Light, she became Empress Mercury.
  • Implacable Woman: Invoked. One of Ami’s plans relies on her passing as this in order to discourage an entire army of engaging with her, so she could negotiate with their leader. And she succeeds.
  • Improvised Weapon: In one of her most brutal battles where she was pushed to her absolute limit, she threatened an enemy Keeper's final blow on his dungeon heart with a pointy rock she grabbed on a whim.
  • Injured Limb Episode: After her battle with the Reaper, she had to wear a cast on her left arm, and a cape to hide said cast to upkeep her unstoppable Evil Overlord persona. Considering that most people didn’t realize it when they see the image on the main page, it’s safe to say that she succeeded.
  • Innocent Blue Eyes: Her real eye color. It's almost poetic that whenever Ami is using her Keeper powers or feels intensely angry, they turn into Red Eyes, Take Warning.
  • Intelligence = Isolation: Often spends a lot of time on her own while working on a laboratory or a library, even when people are around her. She does it less and less as the story progresses and she learns to delegate, but every now and then she’ll isolate herself with books and sandwiches again.
  • Invisible to Normals: Her sailor senshi and normal forms look different to other people who might not recognize her without her enchantments. Her own mother didn't recognize her at first glance until another person referred to her as Ami.
  • It's All My Fault: Constantly suffers from this whenever she watches innocents die. She constantly wonders if she could’ve done more, if it’s her fault that they were there in the first place, and cries when she can’t save everybody.
  • Less Embarrassing Term: She prefers to be called Empress to Keeper, and insists on her minions to refer to her that way to undermine the negative connotations that come with being a Keeper.
  • Lesser of Two Evils: How Ami is seen by some of the more level-headed followers of the Light. Notably even the Avatar, for whom Keepers are a Berserk Button advises the dwarves that Mercury is not a high-priority threat and will be more or less harmless if left alone.

    Amadeus: “Just stop provoking the bookworm and she won’t bother you.”
  • Little Miss Badass: Considered this by most people she meets, since her feats usually lead them to expect a more frightening, older Keeper.
  • Little Professor Dialog: She tends to do these from time to time. Luckily, she realizes it most of the time and explains it again "in a way Usagi would understand."
  • Locked in a Freezer: Without spoiling too much, let’s say that she was locked in a trap with one of her most stubborn opponents, and managed to escape with a new ally.
  • Luminescent Blush: Ami, occasionally. Usually out of embarrassment, like when it's revealed that she could use her Keeper Sight to peep on Dark General Jadeite while he's changing, in Chapter 42: A Solution to the Reaper Problem?:
    "What? I wouldn't!" Ami sputtered, her face taking on the same same color as a ripe tomato, and she raised both hands defensively, waving them left and right.
  • MacGyvering: She has escaped many deathly situations by using many objects and spells in ways they were not meant to be used.
  • Mad Scientist: She has hints of this, and even sees herself as one on the few occasions she realized how pumped up she got over her own creations.
  • Magical Computer: Has one by virtue of being Sailor Mercury. It appears and disappears at will, and she uses it to understand and study every aspect of the world around her, allowing her to find creative uses for things other people dismissed. It's her most useful and necessary asset, and it seems her enemies are catching on about it.
  • Magic Knight: She’s able to cast spells from three different magic sources, but has no qualms about fighting hand to hand or using swords and scythes.
  • Magitek: Her willingness to combine magic and science is how she managed to be come a One Woman Industrial Revolution.
  • The McCoy: A rare leader example. Ami will put her humanitarian goals above everything, putting her at odds with her more pragmatic advisors and the Dark Gods she’s supposed to serve.
  • Meaningful Name: The "Mizu" in "Mizuno" means "water", and given that she has water-based magic...
  • Memetic Badass: In-Universe example. Ami's reputation has made her this, and it's only increasing with time.
  • Memetic Molester: Also In-Universe. Due to a series of misunderstandings, Ami is rumored to be an extreme deviant. The ultimate of these rumors is that of Ami doing something no even remotely sane person would ever try, let alone survive - raping a horned reaper. Of course, unlike just about everyone else, the dark mistresses consequently see her as a Sex Goddess instead.
  • Modest Royalty: As seen in "Noble Conversations": The new empress, who sees more value in military spending than satorial:
    Iden secretly scoffed at the reaction, which she would have expected from a mere commoner. It fit with Mercury's general appearance. Her dress was of similar quality to what the daughter of a mildly successful merchant would wear - before the guards dragged her away for indecent exposure. That Keeper was insulting proper nobles everywhere by wearing something so scandalously short and clingy in front of her court!
    she wasn't wearing a proper crown - merely a tiara with a large sapphire set in its centre. Was some last shred of decency stopping her from donning all of the trappings of the title she didn't deserve?
  • Names to Run Away from Really Fast: “Keeper Mercury, Empress of the Avatar Islands.” A name so terrible that parents use it to scare their children into behaving properly or else she'd eat them.
  • Nerds Love Tough Schoolwork: She loved academic challenges on her world, and Jadeite was surprised to see how dedicated and clever she was when teaching her on how to work his magic.
  • Nice Guy: Ami is a good person first and foremost, and most decent people who actually get to know her tend to like her and accept her despite being a Keeper.
  • One-Handed Zweihänder: By using either a Golem body and some magic or a strength-enhancing powered armor, Ami is able to wield a large sword she shouldn't be able to in normal situations.
  • One-Woman Army: Her assault on the City of Salthalls. She managed to surpass all defenses by herself, while trying to cause as little harm as possible.
  • One Woman Industrial Revolution: She relies on scientific knowledge from her world to solve practical problems; such as creating artificial sapphires to fund her empire or windmills to generate electricity for facilities in her dungeons. For reference, the Dungeon Keeper world considers a light bulb to be magic. This greatly aides her surprise factor, but Ami must protect the knowledge so other Keepers don't steal her ideas for their evil purposes.
  • Only a Flesh Wound: Played with. Since Ami rarely leaves her territory in her own body and uses golems with human disguises as vessels, she can’t effectively feel pain, but nobody can know that at first glance. She has been backstabbed, mutilated and impaled, and her reactions ranged from calmly asking for help from a horrified onlooker to remove the dagger from her neck, to complimenting her attacker while reeling him in even closer and slamming her knee into his chin.
  • Outside-Context Problem: Ami is an outside context magical heroine. But just try to convince anyone of that...
  • Paint It Black: She starts wearing more darker colors to get into her Evil Overlord persona, since Evil Wears Black. Her sailor senshi fuku becoming black instead of white was not her own choice, though.
  • Palm Bloodletting: In order to work Adamantine, she has to pass a Secret Test of Character by letting her blood be judged. She cut her palm with a nearby pointy rock to do so.
  • Pay Evil unto Evil: Ami battles different Keepers and gets their lands by employing similar creatures to them and using their own spells against them. Most of the time she wins by being smarter and more creative with the same tools they have.
  • Perspective Flip: Against the Full Fairy Aerial Recon Force of the Shining Concord Empire... Since they're essentially a squad of magical girls with team attacks and dramatic poses who are fighting Ami, who at this point is both a magical girl and an "evil" monster that can steal soul energy. Even Jadeite can’t help but laugh at the irony.
    Ami blinked, somewhat baffled by the spectacle. Is this how our enemies feel when Sailor Moon gives her speech?
  • Post-Victory Collapse: Since she tends to overexploit her magical reserves and pushes herself to her upmost limits until victory is achieved, this has become a tendency for her.
  • Power Floats: Thanks to Jadeite’s teaching and Metallia’s power, she gains the ability to levitate and fly at will.
  • Power Glows: In here, her healing spell has a "green glow".
  • Pragmatic Villainy: After many failed attempts of getting people to believe her good intentions, she started using this as a way to still act as a good person while pretending to be the Evil Overlord everyone thinks she is. Attacking other Keepers because they're hurting innocents isn't respectable to the Underworld; attacking those Keepers to take their territory and to obviously benefit herself is.
  • Rage Breaking Point:
    • When she searched through Malleus' memories to find how to create dungeon hearts, she experienced all his life from his eyes. When she saw and felt all the horrible things he did, and how little he regretted them, she snapped and killed him as soon as she was done with him. This was the first time Ami killed someone in cold blood.
    • The horrible things Crowned Death did to his potential sacrifices absolutely horrified her, to the point where she went on a rampage destroying his Keepers dungeons single-handedly.
  • Rail Enthusiast: Two chapters are entirely dedicated about her studying and spying on the infrastructure of dwarven rail systems. In the end, she assaults an entire city on her own so she could ask a Duke for help building her own railway system.
  • Rant-Inducing Slight: After Camilla accused Mercury that she was keeping the civilians alive to use them as sacrifices, Ami snapped and ranted about all the accommodations, blueprints and organization she did to keep them alive, healthy and happy.
  • Rat King: Mockingly called the "Rat Queen" by Cathy and Jered when she started using rats to perform the task of imps.
    Cathy: "Brr, rats. I find them gross. Oh well. If they can do part of my work, I will put up with a horde of rats bustling about the dungeon. However, I see a minor problem."
    Mercury: "Yes?"
    Cathy: "All hail the Queen of Rats!"
  • Reasonable Authority Figure: To her employees.
  • Recruiting the Criminal: She's very prone to do this for different reasons; either to protect herself from them, to protect others from said criminals, or because they’re too useful or dangerous to be left alone to their own devices. That's how she managed to get Zarekos' vampires, Nero's horned reaper and Morrigan's head warlock working for her.
  • Red Eyes, Take Warning: Got these due to her Keeper powers and soul connecting to the Dark Gods. Her eyes return to her natural blue color from time to time, but they remain red for most of it.
    Keeper Mercury: "I do notice that you failed to describe my eyes."
    Troll Guard: "What about them?... Oh shit!"
  • Renaissance Woman: Thanks to her academic pursuits, her innate curiosity and constant application of all knowledge, Ami has knowledge of many fields like magic, culture and professions; and will never reject new information or lessons. Unless they're Cathy's physical lessons.
  • The Red Mage: Ami has some knowledge of her Sailor Senshi spells, her Keeper spells, her Glamour spells and even a bit of necromancy. She doesn't specialize in either, but she does combine them in original and often unexpected ways.
  • Rich Genius: While she was already wealthy in her world, Keeper Mercury is insanely wealthy by Keeper standards. Mostly because she created gem furnaces, which are the local equivalent of creating a machine that prints gold.
  • Roaring Rampage of Revenge: She personally destroyed the dungeons of Clairmonte's subordinate Keepers after finding out that Crowned Death plucked the eyes out of thousands of prisoners to make them more docile sacrifices.
  • Royals Who Actually Do Something: Empress Mercury leads almost all her battles by herself and always makes sure that her employees are alive, healthy and out of the line of danger if she can avoid it. She also makes sure that even her prisoners and guests have all the possible luxuries and the best lifestyle she can give them.
  • Science Hero: Has good knowledge of 20th century science and technology, as well as the mindset of an engineer.
    The Light: "We will not go into further detail, because Empress Mercury has a knack for finding creative and distressing applications for things she understands."
  • Signature Move: She has two Senshi spells. Shabon Spray (creates a dense, cold fog in an area that Ami and her allies can see through), and Shabon Spray Freezing (launches a stream of bubbles that freeze the impact point and its near surroundings).
  • Silk Hiding Steel: Most people who get to see her in person get surprised at how small, young and proper she is, because of her badass deviant reputation. However, if they think they push her around, they soon find out that the badass part of her reputation is well deserved...
  • Skewed Priorities: Despite going through a hell of emotions almost weekly, the realization that she's getting behind on her career or might lose an academic year in school back in her world are the ones that got her to finally break and cry.
  • Smart People Build Robots: Her ice golems are basically magically-powered robots.
  • Smart People Play Chess: Well, the Adushul version is called Kingdoms, which differs a bit from chess, but it's a game of strategy, and she won the first five games, against the person who introduced the game to her.
  • The Spark of Genius: This is Ami's strongest trait. Her natural curiosity and fondness for the scientific approach, mixed with her unique Sailor Senshi, Dark Kingdom's Metallia Magic and Keeper skills, enable her to create and manipulate artifacts and magic in ways that no other Keeper can recreate or imitate. And they've tried.
  • Spontaneous Weapon Creation: Ami can use her Dungeon Keeper ability to create anything she can think of, and have the material / magic for, to produce swords, mainly BFS, larger than herself, wielded with telekinetic power.
  • Sufficiently Analyzed Magic: One of her defining traits. She studies, categorizes and finds the limitations of her ever-growing arsenal of spells and powers. This allows her to use them to MacGyver herself out of many mortal situations.
  • Super Smoke: Her Keeper powers allow her to turn into a smoke-like entity that can pass through small places and possess people.
  • Symbiotic Possession: She uses her possession power on her employees from time to time, with the condition that either they consent to it or are unable to think for themselves.
  • Tareme Eyes: They slowly change over the course of the story, but she starts out with them and they reflected her personality perfectly at the time.
  • Techno Wizard: This is what gives her the edge over other Keepers. Her willingness to combine technology and science with magic gives her unlimited resources and tons of new tools to achieve victory.
  • Teen Genius: Ami is only 14 going onto 15 and she’s already a One Woman Industrial Revolution.
  • Telepathy: She’s able to address her minions and employees using a telepathic spell she created with the help of her warlocks.
  • Theme Naming: Sailor Mercury, like all other Sailor Guardians, is named after a planet.
  • The Teetotaler: As a teenager in a medieval Europe-based land, she had ample opportunities to drink, but the only time she did was to try to numb the pain of having been responsible for deaths... and that drinking led to her almost embarrassing herself, so she doesn't try drinking again.
  • Terror Hero: Mercury gradually comes to terms with the fact that people will always assume that she's evil at first glance, so she started using her reputation and even acting the part to help unwilling people or scare away potential enemies.
  • Token Evil Teammate: Considered one by The Light and a few Heroes. She is a Keeper, yes, but she’s good enough to get The Light’s approval and pass their test of purity by working Adamantine.
  • Training from Hell: Cathy puts her through one in order to prepare Ami for her duel with the first Horned Reaper.
  • Trapped in Another World: She comes to the Dungeon Keeper world's dimension from the one containing Earth, after falling into a dimensional rift caused by Jadeite during a fight between him and the Sailor Senshi.
  • Unstoppable Rage: She went on a rampage of destruction with all her spells and abilities on Clairmonte's dungeons once she found out that Crowned Death plucked the eyes out of thousands of people, most of them children, to make them more submissive sacrifices.
  • Victory Through Intimidation: She attempts to do this to a dwarf kingdom so she could trap and negotiate with their leader. She... sort of succeeds.
  • Weak, but Skilled: Compared to other sorcerers and warriors, Ami is not that powerful on her own. But thanks to her many resources, quick wit and constant tricks, she manages to survive all her fights and even win some.
  • Wise Beyond Their Years: She surrounds herself with adults who have years of experience as her subordinates, and everyone treats her either as an equal or a superior. But she's still fifteen.
  • Wounded Hero, Weaker Helper: Whenever Ami is hurt and can’t heal herself on her own, she always calls on Snyder’s assistance or advice despite him being a simple acolyte of the Light.
  • Xanatos Speed Chess: Ami is often forced to make plans quickly and adjust them to very sudden assaults or setbacks, in response to the increasing attacks on her person and her lands by the Forces of Good or the denizens of the Underworld.
  • You Gotta Have Blue Hair: One of the strangest things about her for the locals, which is surprising to her, since this was the one completely normal for the people on her world.
  • Zombie Advocate: Downplayed. While her mother made her realize that Imps might have the intelligence required to be considered people and made them attend school, she still needs them to be somewhat expendable to fulfill her objectives.

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