The Materials (マテリアル Materiaru) are programs of the "Eternal Ring" of System Unbreakable Dark (U-D) in the Portable continuity. They, along U-D, were written long time ago in the Ancient Belka, originally used to take possession of the powers of the Book of Darkness, but were sealed by the Book (probably the Defense Program) in return.The nature of the Materials is similar to that of the Wolkenritter, and their existence can slightly be felt by Reinforce in the past. However, they were not materialized until the Defense Program is destroyed. Each of their materialized forms is a copy of one of the mages who defeated the Defense Program.In The Battle of Aces, they are misidentified as three special "dark fragments" created by the Defense Program's regeneration. In The Gears of Destiny, it is revealed they are actually materialized due to the unsealing (regeneration) of the system Unbreakable Dark.
Breakout Character: In The Battle of Aces, even if Stern and Dearche were Final Bosses, all of them were minor enemies and color swapped copies of the protagonists with their abilities and magic color. In The Gears of Destiny, they are major characters with their own fighting style, own magic color, own moves and developded personalities. The Materials appear as major characters in Magical Girl Lyrical Nanoha INNOCENT, and as main characters in The Gears of Destiny Drama CDs and in the manga Magical Girl Lyrical Nanoha A's Portable - The Gears of Destiny - Material Musume.
Humanoid Abomination: They are remnants of the Book of Darkness' berserk protection program that have taken human forms. In a way, they are similar to Hayate's guardian knights.
Mythology Gag: In Material Musume, they wear the same clothes as their originals. Dearche wears Hayate's pullover, Stern wears Nanoha's outfit from The Movie 1st, but with different colors, and Levi wears Fate's dress from the same movie, but with long sleeves. Before that, she wears a Sacred Heart costume.
Secret Character: In B.O.A. The three Materials must be unlocked by clearing the story modes of their three "component" characters with all the Warning battles and can only be used in player vs. computer game modes.
To unlock Material-S as a playable character, complete Nanoha, Vita, and Zafira's story routes.
To unlock Material-L, complete Fate, Signum, and Chrono's routes.
To unlock Material-D, complete Hayate, Shamal, and Reinforce's routes.
Talking To Themselves: Of course, they share the same seiyuus with their originals and they have a lots of dialogs with them.
Material S aka Stern the Destructor is the copy of Nanoha Takamachi with the melee skills of Vita and the defense skills of Zafira. "Lord" Dearche refers her as her right-hand. She's stoic, rational, quiet and polite, but still extremely dangerous. Stern is the Material of Wisdom and is called as the "Exterminator of Starlight".
Beam Spam: Well she is Nanoha's clone after all. She diverges from being a mere copy of Nanoha in G.O.D, where her attacks are faster and have more shots. Her charged Disaster Heat (her version of Nanoha's Divine Buster) fires three consecutive shots instead of one long beam and has less reach than Divine Buster.
Blood Knight: When she is beaten in Nanoha's route in the Battle of Aces, she would state that it was a good fight while smiling and if given another chance, would challenge Nanoha again. She also made a promise with Nanoha that they'll have a rematch even if they reunited after Nanoha becomes an adult.
It's this promise that makes her try to stop U-D (and Dearche) from destroying everything. She wouldn't be able to fight Nanoha if she were dead!
First Name Basis: She calls people directly related to her by their first names; Nanoha for being her original, Levi and Dearche for being her allies. She refers to everyone else by a title (refers to Hayate as "Mistress of the Night Sky" and as noted below calls Yuuno "Master" for being Nanoha's magic teacher).
However, when speaking Nanoha's name, it is written in Katakana instead of Hiragana.
Friendly Enemy: When she and Nanoha meet again in Gears of Destiny, the first thing they do is exchange pleasantries.
Heroic Sacrifice: Gives Dearche her remaining powers after succeeding in wounding U-D at the cost of her life,
Hypercompetent Sidekick: Confirmed as Dearche's right-hand. She found out the information regarding U-D's nature and origins, negotiated with the heroes for their cooperation, and even provided everyone with a method of defeating U-D herself. As competent as she is, she is content on playing second fiddle to Dearche, in fact, all of her plans were made with Dearche's benefit in mind. In the end, she is shown to be the one managing the restoration of Eltria, with the help of U-D/Yuri.
Irony: As Nanoha's dark copy, she's supposed to be evil, but actually she isn't. In the Gears of Destiny Drama CD Side-A, she fights against adult Nanoha and lost to her, then Teana lampshades that Nanoha is "merciless as always".
Japanese Honorifics: Calls Yuuno "Shishou" after he manages to win against her, proving that she acknowledges him as her original's master.
Lady of War: The most elegant, most calm and most feminine of the three.
Morality Chain: To Dearche. Sees no logical reason to kill people off/cover the land with darkness, and with Levi convinces Dearche not to be an Omnicidal Maniac.
The Plan: She enlisted the help of the heroes to develop countermeasures against U-D, while formulating a plan of her own. She restrains her fellow materials, telling them her plan to act as the first wave against U-D to weaken her defenses, entrusting Levi to act as Dearche's protector. If she succeeds, then her fellow materials would be able to succeed in capturing U-D, if she failed then Nanoha and the others would be able to finish off her job. Whatever the outcome would be, she informs Dearche that only her device would be able to completely control U-D's powers, allowing her to gain the limitless powers she had sought for.
Playing with Fire: She says she acquired the "powers of the Destructor" in the time between the games, leading to her powers being fire based, but has no idea why fire, of all elements.
The Smart Girl / The Spock / The Evil Genius: She is the Material of Wisdom, and true to her designation, she will always take the most logical course of action when dealing with various situations. Of course, this sometimes puts her at odds with Dearche, but the latter is willing to listen to her reasoning, despite expressing displeasure over the former's lack of respect. Stern will be quick to point out that she respects Dearche, but does not confuse it with logic that would help further their plans. These traits also made her the first to undergo a Heel-Face Turn, since to her, it would be highly illogical for Dearche to destroy everything, coupled with the fact that she and Nanoha have a rematch to do.
Undying Loyalty: To Material D, to the extent that she is willing to take on U-D alone knowing she has no chance but simply to weaken her defenses, just so Material D can defeat her and take her powers. She gives Dearche her remaining powers after suffering heavy injuries so she will have a higher chance of succeeding when she battles U-D.
Stern: I am the flame that opens the path of my king...Even if I am extinguished, I will have no regrets.
Material S aka Levi the Slasher is Fate Testarossa's copy with Signum's weapons finesse and long-range defenses and Chrono's extensive Full Drive-enhancement skills. Claims to be Dearche's "left-hand". She's extremely energetic, loud and a Blood Knight, but she's also very childish and not particularly smart. Levi is the Material of Power and she's called the "Assailant of Thunderblade".
Tropes related to Levi
And Then What?: Fate asks her what would they do after they acquired the powers of the Unbreakable Darkness. Levi's answer was "I don't know, haven't thought about it." She justifies this reason by stating that she only obeys what Stern and Dearche command her to do, since the two of them do all of the complicated thinking.
Brilliant but Lazy: As a Material, Levi can come up with technical knowledge just like the other Materials and she understands it. For the most part, she chooses not to. Lampshaded in a conversation with Fate.
Dumb Muscle: She can break a bind spell using brute force allowing her to escape Stern's bind spell and catch up to her, which she lampshades. She also stated that she leaves all the thinking to Stern and Dearche, simply following whatever they order her.
Fragile Speedster/Glass Cannon: In G.O.D., her actual defense rating in the game is exactly the same as Fate's meaning below average in normal form and worst defense when in Sprite Form. It's mentioned in a Sound Stage that Levi actually has less armor than Fate.
Friendly Enemy: She greets Fate happily and shows off her new and improved self in their meeting in G.O.D. She says that their behaviors in the Battle of Aces were similar to sleepwalking. She even gets along with Reinforce.
Genki Girl: In contrast to Fate. And more Genki then Alicia. Actually, she's the most genki person in the whole franchise.
Heroic Sacrifice: Assists Material S in her plan to weaken U-D's defenses. They succeed, but end up heavily injured, so she decides to give her remaining powers to Material D like Material S.
Hidden Depths: She thinks and acts like a child, and Material S stated her program parameters are simple (thus she was the first one to be revived after U-D destroyed their bodies upon her revival). However, she's able to explain the nature and origins of Materials like herself, which surprised Fate a lot.
I may act like this but I'm a Material y'know! I'm smart, y'know!
Malaproper: She mispronounces Fate's name as "Hate" at several occassions.
In the Material Musume manga, she even mispronounced her own name.
The Nicknamer: She is apparently bad with names, unlike Stern, who prefers referring to people other than those related to her with a title, or Dearche, who doesn't even bother knowing the names of people other than her retainers and Yuri.. The only exceptions to this are Stern, Dearche (who she addresses as "Your Magesty" because that's what she wants) and again, Yuri. Some of the people she gave nicknames to are...
Undying Loyalty: To Material D as she's perfectly willing to sacrifice herself like Material S, so that Material D can gain U-D's powers.
Unskilled, but Strong: When beating her in their respective storylines, Chrono and Fate both note that although she's as strong as she claims to be, her attacks are fairly simple to dodge because she swings too wildly and she has a tendency to use flashy moves. She says because she's the Material of Power, she feels her attacks need to be big and flashy.
You Remind Me of X: Levi reminded Fate of Alicia, because of her aqua-blue magic color and her energetic personality... Or not.
Material D aka "Lord" Dearche is the king of the Materials, the king of the Purple Sky, and the copy of Hayate Yagami with Reinforce Eins' enormous mana output with Shamal's healing and restoration skills. She's very proud, has a very big ego, she's loud and looks down on other people, but she's actually nicer than she acts. Dearche is the Material of Lordship and she's called the "Lord Ruler of Darkness".
Break the Haughty: Her loyal retainers sacrificing themselves didn't really sit well with her. This is also what leads her to fully cooperate with the heroines, intent on finishing the task of saving U-D.
Conservation of Ninjutsu: Her first appearance in Gears of Destiny has her handling the heroes all by herself. She would have won, if her two subordinates hadn't showed up and taken some of the mana that she was utilizing, causing her magic levels to drop.
Hey You: She never calls (and even bothers calling) anyone other than her two subordinates and Yuri by their name.
Hidden Depths: She's haughty, self centered, and seems hell bent on gaining power so that she could destroy the world. Her actual motivation for seeking the power of the Unbreakable Darkness is to provide a place for Stern and Levi to do whatever they please and go wherever they want. This is why she initially refused Hayate's offer of help, saying that she did not want to be indebted to others for something she can obtain by herself.
Jerk with a Heart of Gold: Despite her attitude towards her retainers, she genuinely cares for both of them. When the two of them end up heavily damaged after succeeding in injuring U-D, she goes to their side and tries to transfer some of her magic power to them. She even refused and desperately ordered them to stop when they transferred their powers to her.
Kneel Before Zod: One of her attacks is a counter-bind spell, in which she says "Kneel before me!" when it connects. She also says this on some parts of the story in G.O.D
Large Ham: Spends most of her time chewing the scenery, and the remainder lampshading it. In G.O.D., she mentions that she spent the break between the games practicing her Evil Laugh.
Omnicidal Maniac: During the Battle of Aces. The other Materials keep her from this path in Destiny.
Otaku: A minor one. When Kyrie suggested that her final form when she acquires U-D's powers would look like a giant cartoonish robot, she thinks it's cool. Reinforce and Hayate don't know what to think about this.
They Call Me Mister Tibbs/Catch Phrase: She often says the line "Call me 'Your Majesty'" in fanfiction stories to insist that others to refer to her as such. However, she does not do this in canon since everybody already addresses her that way.
The Juggernaut: She's nearly unstoppable. Only with the Heroic Sacrifices of Stern and Levi that lower her defense and with the force of most playable characters can stop her. Also, Dearche's Tome of Purple Sky is the only thing that can control her, and Chrono says that the chance of controlling her is higher than destroying her.
In Sequence X, she wins all mock battles by herself. Her opponents are Stern, Levi, Kyrie, Dearche and Amitie, in that order. And you play her.