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Boosted Gear, also known as the Red Dragon Emperor's Gauntlet, is a Sacred Gear wielded by Issei Hyoudou. Listed as one of the original thirteen Longinus, specifically a mid-tier Longinus,[1] it has the spirit of the Welsh Dragon, Ddraig, residing within it.


In the past, Ddraig fought against his arch-rival, the Vanishing Dragon, Albion, in a battle that was interrupted by the Angels, Devils, and Fallen Angels who were at war during the time. In anger, both Dragons attacked the leaders of the Three Factions, which led to their bodies being destroyed and their souls being sealed into two separate Sacred Gears, with Ddraig moving into the "Boosted Gear", a Sacred Gear that eventually became one of the eighteen varieties of Longinus.[2]

In Volume 9 of the Light Novels, it is revealed that when a host of the Boosted Gear dies, a fragment of their consciousness is stored inside the Boosted Gear, while normally only waking up during the activation of the Juggernaut Drive. However, there are two people who maintain a degree of consciousness; Belzard and Elsha. Belzard is known as the strongest Boosted Gear possessor due to being known for defeating two White Dragon Emperors in his lifetime, while Elsha is known as the second strongest and the strongest female.[3]

In Volume 10, it is revealed that a past possessor of Divine Dividing was stored within the Boosted Gear when Issei used one of Albion's jewels to create the Dividing Gear. The past possessor of the Divine Dividing then used his halving power to diminish the dark thoughts of the Boosted Gear's past possessors, allowing Issei to awaken a power opposite to Juggernaut Drive: Cardinal Crimson Promotion, with a different chant.[4]

In Volume 12, all the past possessors sacrificed themselves in order to save Issei's soul from Samael's curse.[5] During the volume, Issei temporarily gained the ability to use Super Gigantic Balance Breaker after merging with Great Red, and lost the ability to use it after the merger was undone.[6]

In Volume 16, Euclid Lucifuge reveals that he created a replica version of the Boosted Gear by collecting information of the Red Dragon Emperor's soul and the Sacred Gear from Issei's original body that was left in the Dimensional Gap by using the Holy Grail. Unlike the original Boosted Gear, however, the Boosted Gear Replica appears on the user's right hand with silver lining and uses the souls of famous Dragons to activate it.[7] In the following volume, the replica was destroyed after Euclid's defeat against Issei.

In Volume 18, Issei and Ddraig unlocked one of Ddraig's original powers called Penetrate which allows Issei to bypass defensive powers, such as Rizevim's Sacred Gear Canceler.[8]

In Volume 20, Issei uses a new chant that he and Ophis created, alternating lines, that allows him to temporarily borrow Ophis' power of infinity. Ddraig names the new form Diabolos Dragon or DxD.[9]

In Volume 25, as a result of taking the miracle drug Indra offered Issei, he is now able to summon Ddraig from the Sacred Gear for a certain amount of time.[10]

In True Volume 3, Issei managed to unlock a new form: Apocalypse AnswerArms by combining with his Familiar, Ryuuteimaru.[11]

In True Volume 4, Issei was able to unlock the dormant Great Red power in his body and achieved True Diabolos Dragon God.[12]


Boosted Gear takes the appearance of a red gauntlet with a green jewel and 2 golden spikes that manifests on the user's arm. In the anime, its initial state looks like a regular Twice Critical. After a certain time, it transforms into a more Dragon-like gauntlet that covers up the user's hand and a majority of the arm. When the Boosted Gear reaches its second liberation, it gains another green jewel and a total of 10 golden spikes, aside from covering more of the user's arm.


Issei activating Explosion

Boosted Gear is a red gauntlet housing Ddraig, the Red Dragon Emperor, which allows the user to double their powers every ten seconds without limit until the user reaches their limit, whether it's their physical abilities, magic or demonic power based on the user. It has been described as allowing the wielder to surpass the powers of God and Four Great Satans for a temporary amount of time.[13]

In response to their user's feelings, the Boosted Gear can transform into its final state, letting the user to transfer their increased power to other people or items, increasing their capabilities.[14] The transferred power can even be performed on multiple targets at the same time, however, about 70 to 80 percent of the boosted power will be transferred.[15] Boosted Gear can also determine the opponent's power level and inform whenever his boosted power reaches a sufficient enough level to defeat an opponent. Issei can transfer power into certain body parts such as eyes for enhanced vision.[16]

In Volume 4, Boosted Gear has proven to be able to store either weapons and items inside the user based off the user's desire, letting them wield their capabilities such as Ascalon (after some modifications).[17] He was able to do the same thing after integrating one of the jewels from Divine Dividing's Scale Mail.[18]

In Volume 18, after venturing in Boosted Gear, Ddraig unlocked one of his original powers, Penetrate, letting the user bypass all defenses, bypassing even Rizevim's Sacred Gear Canceler. Penetrate is also capable of penetrating through attacks and causing damage to the core of opponents, potentially resulting in fatal injury.[19] Issei was capable of using Transfer to focus Penetrate to his eyes, letting him see through solid objects (i.e clothing) at will.[8]

In Volume 21, Issei unlocked Ddraig's ultimate finishing move named the Blazing Inferno of Scorching Flames, which allows him to burn even gods to ashes to the point of burning their souls too.[20]


With Ddraig sealed within the Boosted Gear, its possessors become vulnerable to Dragon-slaying magics, swords and curses as if they themselves were Dragons. The continuous use of the Boosted Gear's "Boost" ability will drain the wielder's stamina to a significant degree. Also, if the user overuses the Boosted Gear's "Boost" ability, after reaching their physical limit, they will enter "Burst" state; which drains the user's increased power and damages the user, due to the wielder exceeding their physical capabilities.[21]


  • Dragon Booster (ドラゴン・ブースター, Doragon Būsutā): Summons the Boosted Gear.
  • Boost (ブースト, Būsuto): Doubles the user's power. This call is announced every 10 seconds until the user reaches his/her physical limit. In Balance Breaker mode, this call is announced repeatedly until the user reaches his/her limit.[22]
  • Explosion (エクスプロージョン, Ekusupurōjon): Releases the Boosted Gear's stored power for a short period of time.[21]
  • Reset (リセット, Risetto): This announcement is called after all the Boosted Gear's stored power during Explosion is drained. Once called, the user cannot use Boost again for a certain period of time, so long as his body is not near its physical limits.[21]
  • Burst (バースト, Bāsuto): This announcement is called when the Boosted Gear's wielder reaches his/her physical limit. Once called; all of the user's increased powers are drained and the user takes damage from the backlash of overusing their ability.[21]
  • Dragon Booster Second Liberation (ドラゴン・ブースター ・セカンド・リベレーション, Doragon Būsutā Sekando Riberēshon): Changes the Boosted Gear into the Boosted Gear Gift. This announcement was used only once during the Rating Game between Rias and Riser.
  • Transfer (トランスファー, Toransufā): Transfers increased power to other people or objects.
  • Welsh Dragon Over Booster (ウェルシュ・ドラゴン・オーバー・ブースター , U~erushu Doragon Ōbā Būsutā): Temporarily activates the Scale Mail armor, Boosted Gear Scale Mail. The first call was used in Issei's final showdown against Riser when he used an incomplete Scale Mail, where he sacrificed his arm as a price for using the temporary power and in his battle with Vali, where he used Azazel's control bracelet in place of a sacrifice.
  • Welsh Dragon Balance Breaker (ウェルシュ・ドラゴン・バランス・ブレイカー, U~erushu Doragon Baransu Bureikā): Activates the Scale Mail armor, Boosted Gear Scale Mail. It was first used during Issei's battle with Kuroka where he had attained his complete Balance Breaker.
  • Vanishing Dragon Power is Taken (バニシング・ドラゴン・パワー・イズ・テイクン, Banishingu Doragon Pawā izu Tei-kun): This call was announced when Issei formed the Dividing Gear with one of Albion's jewels during his battle with Vali.
  • Divide (ディバイド, Dibaido) : Halves the opponent's power. This call is announced every 10 seconds when the Dividing Gear is in use. In Juggernaut Drive, this call can be announced repeatedly.
  • Blade (ブレード, Burēdo): Summons Ascalon.
  • Juggernaut Drive (ジャガーノート・ドライヴ, Jagānōto Doraivu): Activates Juggernaut Drive.
  • Longinus Smasher (ロンギヌス・スマッシャー, Ronginusu Sumasshā): The chest armor of the Scale Mail slides open and fire a powerful shot. This attack was used only thrice in the series: in Volume 6 when Issei blasted Shalba Beelzebub while in Juggernaut Drive, in Volume 12 when it is used to completely blast away the last of the Jabberwocky, where Ddraig reveals that this is a forbidden and sealed attack, and in Volume 17 where, with the help of his Dividing Wyvern Fairy's boosting power, he was able to achieve it. In Volume 21, while using his Diabolos Dragon armor, Issei is capable of firing Longinus Smasher which is enhanced by the power of infinity and is even capable of combining it with Infinity Blaster, for a massive aura blast attack.
  • Jet (ジェット, Jetto): Allows Issei to fly with his Dragon Wings while in Scale Mail mode. Accessed after Issei entered Juggernaut Drive.
  • Change Star Sonic (チェンジ・スター・ソニック, Chenji Sutā Sonikku): Used while in Illegal Move Triaina. Changes the Scale Mail armor into the Welsh Sonic Boost Knight.
  • Change Solid Impact (チェンジ・ソリッド・インパクト,Chenji Soriddo Inpakuto): Used while in Illegal Move Triaina. Changes the Scale Mail into the Welsh Dragonic Rook.
  • Change Fang Blast (チェンジ・ファング・ブラスト, Chenji Fangu Burasuto): Used while in Illegal Move Triaina. Changes the Scale Mail into the Welsh Blaster Bishop.
  • Cardinal Crimson Full-Drive (カーディナル・クリムゾン・フル・ドライブ, Kādinaru Kurimuzon Furu Doraibu): Activates Cardinal Crimson Promotion.
  • Star Sonic Booster (スター・ソニック・ブースター, Sutā Sonikku Būsutā): Used while in Cardinal Crimson Promotion. Grants the user godlike speed that far surpasses Welsh Sonic Boost Knight's.
  • Solid Impact Booster (ソリッド・インパクト・ブースター, Soriddo Inpakuto Būsutā): Used while in Cardinal Crimson Promotion. Morphs one of Cardinal Crimson Promotion's fists into one of the Welsh Dragonic Rook's, allowing for an enhanced version of Solid Impact.
  • Fang Blast Booster (ファング・ブラスト・ブースター, Fangu Burasuto Būsutā): Used while in Cardinal Crimson Promotion. Fires the Crimson Blaster, an enhanced version of Welsh Blaster Bishop's "Dragon Blaster".
  • Bust (バスト, Basuto): Announced whenever Issei touches Rias' breasts. This replenishes Issei's power and stamina, albeit at the cost of Rias' breasts shrinking with each use (though they do grow back to normal within a day's rest, according to Rias).[23] This announcement is called repeatedly.
  • Reflect (リフレクト, Rifurekuto): It's one of the two abilities of the Dividing Wyvern Fairy and the original power of Albion. The white dragons can reflect any incoming attack to a certain degree.[7] It was first used against Euclid Lucifuge.
  • Penetrate (ペネトレイト, Penetoreito) : One of Ddraig's original abilities. This allows the user to bypass defensive abilities, such as Rizevim Lucifer's Sacred Gear Canceller.[8] It can also be used to penetrate through attacks and attack the core of opponents.[19]
  • Dragon Drive (ドラゴン∞ドライブ, Doragon ∞ Doraibu): Activates Diabolos Dragon.
  • D ∞ D (ド∞ド, Dī ∞ Dī): Announcement called when Issei is directing Ophis' infinity power.
  • Blazing Inferno of Scorching Flames (いつえきのえんか, Itsu Eki no Enka): The ultimate flames which can incinerate anything until nothing remains. Once ignited, they will never go out. Even Gods will be burnt to ashes within these flames. It was sealed by the God of the Bible. It was only ineffective against Albion. However, Ddraig mentioned it may also be ineffective against Great Red or Ophis. It is unlocked in Volume 21 due to the effects of Issei's second Dragon Deification.[20]
  • ∞ Blaster (インフィニティ・ブラスター, Infiniti Burasutā): Used while in Diabolos Dragon. Fires the Infinity Blaster, an enhanced version of Cardinal Crimson Promotion's "Crimson Blaster" which was enhanced by the power of infinity.
  • Blade Two (ブレード ・ツー, Burēdo Tsū): Summons the second Ascalon sword, Ascalon II.
  • D ∞ D Boost (ド∞ド・ブースト, Dī ∞ Dī Būsuto): A combination ability with Ingvild Leviathan's Longinus; Nereid Kyrie. Due to the Longinus' ability to strengthen Dragons, by using Diabolos Dragon as a conduit and utilizing Transfer, it can strengthen allies in close vicinity in addition to the Boosted Gear user.[24]
  • Dragon ∞ Full-Drive (ドラゴン∞フル・ドライブ, Doragon ∞ Furu Doraibu): Activates True Diabolos Dragon God.
  • D: This announcement sounds repeatedly when Issei directs Great Red's power in his True Dragon Deification.
  • Answer: This announcement sounds repeatedly in place of Boost when Issei uses Apocalypse AnswerArms.


Base Form: Twice Critical (Anime only)

Twice Critical

The initial form of the Boosted Gear in the anime. It takes a form of a red, armored bracer with yellow accents and a green jewel on top of the palm area. The fingers aren't covered. It was initially mistaken as a Twice Critical.

Initial Form: Boosted Gear

Boosted Gear (Dragon Booster)

The form where it was finally realized that it is the Boosted Gear. It first debuted during Issei's last battle with Raynare. It is a red, claw-shaped gauntlet with yellow accents and green inscriptions. It is also known as the Dragon Booster (ドラゴン・ブースター, Doragon Būsutā).

Upgraded Form: Boosted Gear Gift

Boosted Gear Gift

Boosted Gear Gift (赤龍帝からの贈り物(ブーステッド・ギア・ギフト), Būsuteddo Gia Gifuto), also known as the Gift from the Red Dragon Emperor, is Boosted Gear's third and final form in the shape of a gauntlet. It has the same appearance as the original Boosted Gear, except with a second jewel that grants the user the Transfer ability and that it covers more of the user's arm. It debuted during Rias' Rating Game against Riser Phenex.

Dividing Gear

Scale Mail Issei with Dividing Gear

Dividing Gear (白龍皇の籠手(ディバイディング・ギア) Dibaidingu Gia,), also known as the White Dragon Emperor's Gauntlet, is the Boosted Gear version of Divine Dividing. It debuted in Volume 4 during Issei's first battle against Vali, where the former placed one of Albion's jewels on his right gauntlet. The Dividing Gear resembles the Boosted Gear but is white in color, has a blue jewel instead of green, and rests on Issei's right hand, as opposed to his left. With Dividing Gear, Issei gains all the powers of Divine Dividing. However, due to it consuming his lifespan, it was banned from use by Azazel.

Dividing Wyvern Fairy

Dividing Wyvern Fairy (白龍皇の妖精達(ディバイディング・ワイバーン・フェアリー), Dibaidingu Waibān Fearī), also known as Fairies of the White Dragon Emperor creates small dragons from the gems of his armor. It first appeared in Volume 16, replacing Dividing Gear. Originally, the Wyverns were only able to use White Dragon Emperor's powers of Divide and Reflect and unlike the Dividing Gear, this does not reduce Issei's lifespan.[7] In Volume 17, Issei managed to change it so that the Wyverns could use either the White Dragon Emperor's powers or the Red Dragon Emperor's powers. The white Wyverns are able to use Divide and Reflect and the red Wyverns are able to Boost ,Transfer and Penetrate. Issei usually uses the Wyverns to reflect his Dragon Shots around so he can attack his opponents from different directions, but he also uses them to boost his powers to the limit, allowing him to use the Longinus Smasher.[25] After training with Rias, Issei manages to make use of the red Wyverns to attach themselves on Rias to create her own variation of the Boosted Gear Scale Mail armor called Crimson Extinct Dragonar (深紅の滅殺龍姫(クリムゾン・エクスティンクト・ドラグナー), Kurimuzon Ekusutinkuto Doragunā). Issei also made use of the red Wyverns to attach themselves on Xenovia to create her own variation of the Scale Mail armor called Crimson Destruction Dragonar (真紅の破壊龍騎士(クリムゾン・デストラクツョン・ドラグナー), Kurimuzon Desutorakushon Doragunā).

Boosted Gear: Scale Mail

Issei activating Balance Breaker

Boosted Gear: Scale Mail (赤龍帝の鎧(ブーステッド・ギア・スケイルメイル), Būsuteddo Gia Sukeiru Meiru): Also known as the Armor of the Red Dragon Emperor, is the Balance Breaker of Boosted Gear which creates a Red Dragon Armor with green jewels that cover the user's body and strengthens its powers and abilities. When active, the user can double their power without the 10-second time limit, this also applies to later forms. The armor has two rocket thrusters on it's back for a temporary boost of speed and flight, from them can come out a pair of retractable Dragon wings that enables the user for proper flight. Originally, it did not have wings, however, after Issei goes into Juggernaut Drive in Volume 6, it gains Dragon wings. In the third season of the anime, Issei's perfect Balance Breaker already has wings. The Scale Mail also allows the user to survive in the Dimensional Gap.[23]

Juggernaut Drive

Issei activating incomplete Juggernaut Drive

Juggernaut Drive (覇龍(ジャガーノート・ドライヴ), Jagānōto Doraivu): Also known as the Dragon of Supremacy, like Divine Dividing, Boosted Gear also has access to this form. This form unleashes the full power of the Welsh Dragon, but the user will lose their sanity and their life will also be devoured. Issei first went into Juggernaut Drive in Volume 6, which would also be his last time. It also has access to the Longinus Smasher, one of the most powerful attacks of the Boosted Gear.

Illegal Move Triaina

The 3 forms of Illegal Move Triana

Illegal Move Triaina (赤龍帝の三叉成駒(イリーガル・ムーブ・トリアイナ), Irīgaru Mūbu Toriaina) also known as the Red Dragon Emperor's Three-Pronged Promotion, is the enhanced form of Issei's Scale Mail, where the armor changes to various forms based on the Evil Pieces' traits.[26]

The available forms for the Illegal Move Triaina are:

  • Welsh Sonic Boost Knight (龍星の騎士(ウェルシュ・ソニックブースト・ナイト), Werushu Sonikku Būsuto Naito)
  • Welsh Dragonic Rook (龍剛の戦車(ウェルシュ・ドラゴニック・ルーク), Werushu Doragonikku Rūku)
  • Welsh Blaster Bishop (龍牙の僧侶(ウェルシュ・ブラスター・ビショップ), Werushu Burasutā Bishoppu)

Cardinal Crimson Promotion

Cardinal Crimson Promotion

Cardinal Crimson Promotion (真紅の赫龍帝(カーディナル・クリムゾン・プロモーション), Kādinaru Kurimuzon Puromōshon), also known as the True Crimson Dragon Emperor, is the Scale Mail's evolution of the Queen form. It changes the color of Issei's Scale Mail armor from red to crimson. Cardinal Crimson Promotion incorporates all three Evil Pieces traits, making it the most balanced and most powerful form of Issei's Scale Mail. It is Issei's answer to a power different from the Juggernaut Drive.[27]

I, who is about to awaken
Am the Red Dragon Emperor who has discarded the principles of domination
I shall walk the road of righteousness by having infinite hopes and dreams
I shall become the King of Crimson Dragon
And I promise you all! I shall show you the future which shines in true crimson light!

汝らに誓おう 真紅の光輝く未来を見せると

Ware, mezameru wa
Ha no ri o sutesarishi, Sekiryūtei nari
Mugen no kibō to yume o mune ni kakae, ōdō o iku
Ware, Akaki Ryū no Ōja to narite
Nanji-ra ni chikaou shinku no hikari kagayaku mirai o miseru to

Diabolos Dragon

Diabolos Dragon God

Diabolos Dragon (D×D(ディアボロス・ドラゴン), Diaborosu Doragon): Is a new form Issei gained in Volume 20 from tapping into Ophis' power inside him. This is due to the fact that his body is made from Great Red's flesh, which enables Issei to temporarily borrow Ophis' power. In this form, the armor becomes "organic" changing the armor's shape, and the armor's color changes from pure crimson to a mix of crimson and black. Additionally, this form gains a total of four wings, each one containing a cannon. Two of the cannons are over his shoulders and the other two are under his arms. In this mode, the Boosted Gear's announcement voice becomes an amalgamation of Ddraig and Ophis' voices and instead of "Boost", the Boosted Gear announces "D∞D" as Issei directs Ophis' infinity power. Diabolos Dragon grants Issei Ophis' power of infinity, enhancing him to the point at which he was able to easily overwhelm Rizevim Livan Lucifer, overpowering his Sacred Gear Canceller.

Diabolos Dragon's finishing move is the Infinity Blaster, a powerful aura blast in which Issei directs Ophis' power to the four cannons stored in the armors wings, then fires them. Infinity Blaster is so powerful that the blast left Rizevim injured to a extent that his body is almost fatally damaged. According to Rizevim, Diabolos Dragon has similar features to the Juggernaut Drive without the ominous aura. However, the time Issei can spend in Dragon Deification is very limited, and after the armor is released, Issei experiences immense pain throughout his entire body and becomes comatose.[9]

Following Issei's battle against Apophis, Ophis adjusts the D×D to prevent the severe backlash of that form and is subsequently renamed the D×D・G (龍神化-『D×D』・G-(ディアボロス・ドラゴン・ゴッド), Diaborosu Doragon Goddo) in tandem with Vali's D×D・L.[28] In Volume 22, a modified version of chant was used by Issei. In Volume 25, after drinking the miracle drug Amrita, Issei can maintain his Pseudo-DxD form for 88 minutes in combat.[10] During his fight with Angra Mainyu, Issei unlocks True-Dragon Deification (真の龍神化, Shin no Ryūjin-ka) , which is described as having Devil, Dragon, and God aura. Hades notes that Issei's power in this form is even greater than when he was in Pseudo-DxD.[29]

Issei and Ophis alternate lines when chanting the Diabolos Dragon chant.

Issei: "The Crimson Red Dragon dwelling within me, awaken from your dominance"
Ophis: "The Crimson Heavenly Dragon I possess within me, rise up to become a King and roar"
Ophis: "The jet-black God of Infinity"
Issei: "The glorious Red God of Dreams"
Both: "Watch over the forbidden existence we shall become that transcends the boundaries"
Both: "Thou shall dance like radiance within our inferno!"

Issei: 我に宿りし紅蓮の赤龍よ、覇から醒めよ
Ophis: 我が宿りし真紅の天龍よ、王と成り啼け
Ophis: 濡羽色の無限の神よ
Issei: 赫赫たる夢幻の神よ
Both: 際涯を超越する我らが禁を見届けよ
Both: 汝、燦爛のごとく我らが燚にて紊れ舞え

Issei: Ga ni yadorishi guren no akaryū yo, ha kara sameyo
Ophis: Waga yadorishi shinku no Tenryū yo,-ō to nari nake
Ophis: Nurebairo no mugen no kamiyo
Issei: Kakkakutaru mugen no kamiyo
Both: Saigai o chōetsu suru warera ga kin o mitodokeyo
Both: Nanji, sanran nogotoku warera ga itsu nite binre mae

Apocalypse AnswerArms

Apocalypse AnswerArms

Apocalypse AnswerArms (A×A(アポカリュプス・アンサーアームズ), Apokaryupusu Ansāāmuzu): Issei's AxA form. This form is the result of Issei combining with his familiar Ryuuteimaru, who is the manifestation of Great Red's power. The power of this form is so great that it overwhelms Tartarus, a Primordial God in Greek mythology.[11] It has the power to destroy the entire planet with its destructive power.[30] Because of the weapons that was installed in Ryuuteimaru, Issei has gained new abilities in this form. The drawbacks of this form is that it has an extremely high consumption rate which gives it a short time limit. Furthermore, Ryuuteimaru is unable to move for a few days and Issei himself suffers fatigue for a few days. It is determined that these burdens compared to DxD G are much lighter.[30]

Super Gigantic Balance Breaker

Super Gigantic Balance Breaker ((ちょう)巨大(きょだい)禁手(バランス・ブレイカー), Chōkyodai Baransu Bureikā) is the form that Issei takes after combining with Great Red in Volume 12. It resembles Boosted Gear's normal Scale Mail, except that it is incredibly enormous in size and now has access to the Longinus Smasher that was previously exclusive to the Juggernaut Drive.

Crimson Extinction Dragonar

Crimson Extinction Dragonar (深紅の滅殺龍姫(クリムゾン・エクスティンクト・ドラグナー), Kurimuzon Ekusutinkuto Doragunā): Also known as The Crimson Dragon Princess of Annihilation. A form developed for Rias Gremory, which is a combination technique between Issei and her. Issei uses his Red Wyverns and sync both of their auras while the Wyverns attach themselves to Rias to create her own female variation of the Scale Mail. The armor acts just like the original, strengthens Rias' abilities and giving her the ability to utilize Boost, Transfer, and Penetrate until she reaches her limit.

Crimson Destruction Dragonar

Crimson Destruction Dragonar (真紅の破壊龍騎士(クリムゾン・デストラクツョン・ドラグナー ), Kurimuzon Desutorakushon Doragunā): Also known as Crimson Dragon Knight of Destruction. Xenovia Quarta's own variation of the Scale Mail armor, which she gained by also synchronizing her aura with Issei's to use his Red Wyverns to attach themselves onto her body which shifts into the form of armor. Like the original, it has all of the same functions of Boost, Transfer and Penetrate. This is noted to be similar to Rias' and yet different.


  • Boosted Gear and Divine Dividing were designated as Mid-Tier Longinus due to portions of the Heavenly Dragons' powers and abilities being sealed by God of the Bible, however, since these restrictions were being removed, their rankings might change.
  • In the Afterword of Volume 12, the author stated that Super Gigantic Balance Breaker is a special form made for that volume only.
  • Cardinal Crimson Promotion is modeled after the ZGMF-X10A Freedom Gundam from Mobile Suit Gundam SEED. The Diabolos Dragon's Infinity Blaster is very similar to the Freedom's Full Burst attack.
  • Longinus Smasher and Super Gigantic Balance Breaker appear to be homages to the Mega Smasher and Gigantic Exceed of Guyver.
  • Among of all Sacred Gears, the Boosted Gear has the most named possessors (Issei, Elsha and Belzard).
  • Boosted Gear is the only known Longinus to have a replica of it made.
  • In the anime, the Third Form: Boosted Gear Gift had an additional four golden spikes in the upper part of the gauntlet and two on the side of the wrist whereas in the manga, which follows the light novels, the six golden spikes aren't shown.
    • In the anime, using Boosted Gear Gift appears to cause a pleasurable sensation in females to who the "Gift" is given to.
  • In Episode 11 and 12 of the anime's second season, Issei demonstrated the ability of extending the blade far longer than its normal length, whether this is a normal ability of the sword or an ability gained with the fusion with the Boosted Gear is not clear.


  1. Light Novel Volume 6, Juggernaut Drive
  2. Light Novel Volume 3, Life 2
  3. Light Novel Volume 9, Life 2
  4. Light Novel Volume 10, Life MAX vs Power
  5. Light Novel Volume 12, Dimensional Gap
  6. Light Novel Volume 12, Life 1
  7. 7.0 7.1 7.2 Light Novel Volume 16, Life 4
  8. 8.0 8.1 8.2 Light Novel Volume 18, Life 4
  9. 9.0 9.1 Light Novel Volume 20, Life 3
  10. 10.0 10.1 Light Novel Volume 25, Life DxD vs Life GOD
  11. 11.0 11.1 True Light Novel Volume 3, Life 4
  12. True Light Novel Volume 4, Life 4
  13. Light Novel Volume 1, Life 4
  14. Light Novel Volume 2, Life 5
  15. Light Novel Volume 3, Life 4
  16. Light Novel Volume 4, Life 1
  17. Light Novel Volume 4, Life 3
  18. Light Novel Volume 4, Life 5
  19. 19.0 19.1 True Light Novel Volume 3, Welsh Dragon & Crescent Circle Dragon
  20. 20.0 20.1 Light Novel Volume 21, Last.DxD
  21. 21.0 21.1 21.2 21.3 Light Novel Volume 2, Life 3
  22. Light Novel Volume 4, Life 5
  23. 23.0 23.1 Light Novel Volume 11, Life 4
  24. True Light Novel Volume 1, Life 5
  25. Light Novel Volume 17, Life 4
  26. Light Novel Volume 9, Life 4
  27. Light Novel Volume 10, Life. MAXIMUM VS Power MAXIMUM: Crimson and Red.
  28. Light Novel Volume 21, Y Ddraig Goch & Albion Gwiber
  29. True Light Novel Volume 4, Life 4
  30. 30.0 30.1 True Light Novel Volume 3, New Life