Hyoudou Issei

**Others*** Aurelion Aurora
* Eos
* Fadir Ferdora
* Elysia
* Hachiman
* Hikari Yuki
* Yokoth
* Mastema
* Morgana Nightwalker
* Nyarlathotep
* Roygun Belphegor

**Alternate Selfs**

* Hyoudou Izumi (Variant)
* "Hyoudou Issei" (Variant)
* Issei Gremory (Variant)

**Others**

* Great Red (Template)
* Eurynome (Incarnation)
* Yaldabaoth (Fused)
* Ubbo-Sathla (Fused)

**Ascalon**

* Ascalon II
* Ascalon II Prototpye

* Pawn (x8)
* King (Independent)

Dragon God
True Dragon
Great War Powers (#2)
Four Great God

**Hyoudou Issei** is the main protagonist of High School DxD. He is the a third-year high school student at Kuoh Academy in Class 3-B and a member of the school's "Perverted Trio", a trio of the most perverted men in the entire student body.

He's a member of the Occult Research Club, and his rank in Rias' peerage is Pawn. His power as a Devil ranks at the bottom at the beginning (which increases as the series progresses, until eventually he becomes the strongest among the young Devils and develops his strength into SS-Class - "Super-Special").

however, on his left arm, he wields the Longinus; the **Boosted Gear**, which hosts the *Welsh Dragon*; **Ddraig**, Issei is the direct rival of Vali Lucifer, who is the host of the Vanishing Dragon; Albion, who is Ddraig's archrival.

He has achieved his goal of becoming a High-Class Devil, obtaining his own servants, and is one step closer to owning a harem, becoming a "Harem King" and protect his loved ones. Issei has exceptional Gods and Buddhas talents and has been called "The Hope who did not become one of the Destiny".

He is also the latest reincarnation of Eurynome, the First Queen of the Gods of Council of Godheads. After reuniting with his Yang counterpart Akashi Kyoya, Issei regained some of his memories and powers, becoming the new hope dragon god of the Dimensional Gap.

## Appearance

Issei is a handsome young man of average height with short spiky brown hair, with two short locks of hair behind his head, and light brown eyes. Following his training with Tannin in Dragon Mountain, he gained a more muscular and toned build.

While he has worn various outfits throughout the series, his most commonly worn outfit is the Kuoh Academy boys' school uniform, which consists of a blazer (more commonly black, although in other media is shown with a tinge of purple or grey, with white accents) over a white, long-sleeved dress shirt with black highlights with a black ribbon on the collar, matching black pants, and brown dress shoes.

However, Issei's uniform differs in the fact that he wears a red T-shirt underneath his open dress shirt and blazer, and wears blue and white sneakers in place of dress shoes. Issei's left arm was transformed into that of a Dragon.

In order for it to appear human, a ritual would be performed where Rias Gremory or Himejima Akeno would suck the power of the Dragon out of it, allowing it to appear human for a few days. After gaining a new body in Dimensional Gap through the combined efforts of Great Red and Ophis, he is now able to freely transform any part of his body into that of a Dragon.

He has been said to show manly expressions by his paternal grandmother. Issei's height is 170 cm (5 feet 7 inches) and body weight is 62→65 kg (137→140 lbs.).

After being contract by Nyx, Issei develops green eyes and strange green markings the encompass his entire left arm, and a green mark resembling a scar on his right cheek. He has also developed a well-toned physique, sporting defined abs and muscles.

After the Cataclysm, an event where Kuoh was reduced to mere rubble and labelled a danger zone, Issei wears a carbon green jacket over a dark red shirt, and a pair of worn out denim jeans with combat boots. He also keeps a sword strapped to his back.

## Personality

Issei is initially shown to be ignorant, self-centered, arrogant, and his ongoing perverted nature, often to make lecherous fantasies, and utterly obsessed with women's breasts and having his own harem. This has caused him to be instantly labeled as a pervert among the girls of Kuoh Academy and has gained him notoriety for being one of the members of Kuoh Academy's Perverted Trio.

Despite his pervertedness, Issei is courageous, selfless and unwaveringly determined to protect those who are important to him, despite almost dying by the hands of his opponents. Having great kindness, Issei is also very caring, "putting his nose into other people's business" as he helped Kiba Yuuto, Toujou Kuroka, and Himejima Akeno overcome their fears and hatred of their mournful past.

Due to this, he gained strong friendship from his comrades and affection from most girls of the Occult Research Club and a strong sense of friendship with higher-up Devils like Rias' family; they have told him to use the same titles for them as Rias (Father, Mother, Brother, etc.), yet he still remains the same.

He has a habit as mentioned by his mother of not forgiving himself if he does something wrong: always saying sorry if said thing is mentioned, and showing an expression of pain and regret. He is also fiercely loyal to his comrades and is always willing to stand up for them. Issei's kindness also have a positive influence on others including former enemies.

When Issei suggested to Cao Cao to use his True Longinus to help and protect people, Cao Cao acknowledged had he and Siegfried met and befriend Issei earlier, they would not have ended up becoming terrorists in the Khaos Brigade. Another sign of his kind nature is that despite wanting to lose his virginity, Issei refuses to take advantage of women when they are upset, even if they themselves are willing to.

This happened when Akeno appeared in front of him naked and wanted to have sex to forget about her sad past and her father. However, Issei refused, knowing it will just hurt her more, and put her clothes back on and hugged her to comfort her.

After his murder by Raynare, Issei had developed a fear of admitting his feelings to the girls, as he thought it would cause them to turn their backs on him. This would also cause him to become oblivious to the feelings of the girls around him (save for Rias after his confession), often believing they are simply teasing him. He acknowledged that this would never happen, but it was still an intense fear.

It is also why he was so insistent on trying to lose his virginity, as he believed that no woman would ever want to be in a true relationship with him and that him having sex was the best he could hope to achieve as a sense of relief. Despite that, even when the girls of the Occult Research Club such as Akeno or Xenovia propositioned him into making love to them, Issei would always initially hold himself back, as he would sometimes look at them with a frightened gaze, a fact which Akeno, Asia and Koneko later noticed.

He fears were finally brought to attention when Akeno, Asia and Koneko confronted him alone and helped him by getting him to admit his feelings and assuring him that they would always love him and so would Rias. This inspired him to finally confesses his love for her which she reciprocated, effectively helping Issei move past his fears. Even with the knowledge that the girls do have romantic affection for him, he still has problems acknowledging some of their ongoing rivalries, an example being who gets to sit on his lap.

Issei is brave, Intelligent, confident, and willing to help others. He is very proud of his ambition of wanting to become a harem king, a promise he made with his mother when he was five. He doesn't hesitate to act when the time calls for it, and can sometimes be impulsive in combat, but has also displayed the capability to step back and think about the situation before acting Showing that generally he is level headed and intelligent, though according to Sirzechs Lucifer his ignition ability can make him overconfident.

While not exactly perverted, Issei has shown not to be too embarrassed when he ends up in perverted situations with women, such as many situations with Rossweisse's lucky lecher lure that he eventually comes to find irritating and once when he leered at Grayfia Lucifuge, when he accidentally looked up her dress surprising her and hoping to see a nude picture of her in the all male devil calendar. He does find the women around him attractive though he does his best to respect them and has yet to realize that Hikari Yuki and Hachiman have feelings for him.

In reality, Issei has an innocent side; he is a boy who yearns for love and a true relationship, a side which he only shows to women who can see past his perverted exterior and love him for who he is and who he, in turn, has affections for. He shows this side to the girls of the Occult Research Club, for instance on his date with Akeno or when Rias takes him out on dates.

Initially, after reincarnating as a devil, he set about his desire for a harem as his initial goal, by having his peerage become his harem. After the Rating Game against Sona and Saji, he slightly changed the goal to having a harem peerage that wouldn't lose to anyone. Among his other goals include competing in Rating Games and making Rias the Champion of the Rating Games by becoming the *"Ultimate Pawn"* alongside Kiba, who promised to become the *"Ultimate Knight"* with him and his desire to become the Champion of the Rating Games himself after he obtains his own peerage.

He is also deeply invested in his rivalry with Vali Lucifer, his Heavenly Dragon counterpart, as Issei promised to get stronger and defeat him, with the both of them reaffirming their promise to fight each other some day multiple times during the series and Vali suggesting that Issei create his own team like Vali which is different from his peerage.

Their rivalry would heat up after the both of them enter the Azazel Cup, with Issei creating his own team, *"Team Red Dragon Emperor of the Blazing Truth"*, to try to win the Cup and defeat Vali during the tournament. After the two of them passed the preliminary rounds, the two expressed their desire to continue their initial fight as the both of them promised not to lose until they meet each other in the Cup.

As revealed by Shiva, Issei has a deep desire for peace which is further strengthened by him being the "child" of Great Red and Ophis, as Issei seems incapable of realizing his dream of becoming a Harem King until he obtains peace with his own hands. Due to experiencing intense fights in which he nearly died, Issei affirms his desire to create a world without war and protect his companions even if his enemy is a God.

While initially shown to be unable to understand the appeal of fighting, Shiva reveals that Issei has developed fondness of fighting strong opponents with strong beliefs, with Issei himself confirming that he has come to like defeating strong opponents as equally as groping female breasts. While Issei is shown to like battling strong opponents, at first he was unable to truly "enjoy" a fight (except his match with Sairaorg) due them mostly being life-threatening fights. This began to change after his match with Dulio Gesualdo, as he realized that competing in the Azazel Cup is mostly sport rather then a serious fight.

Issei is shown to admire strong individuals who have strong beliefs and convictions, seeing them as targets for him to catch up to. He is shown to admire Sairaorg Bael, after witnessing his strength and noble splendor and that respect intensified after learning that Sairaorg was talentless like him, as he noted their similar fighting styles. Due to his interest in Rating Games, he has developed a admiration towards Diehauser Belial and Rudiger Rosenkreutz, due to them being the Top 10 Rating Game players, with Issei especially admiring Rudiger Rosenkreutz due to him being a reincarnated devil like him.

As Dragon, he is shown to admire Tannin, admiring his strength and his desire to help other Dragon as Issei considers him the true Dragon King due to his splendor, and Crom Cruach, due to his overwhelming power and his pride as dragon. While he was initially exasperated and annoyed by Fafnir and his panties fetish, Issei is shown to have developed a respect for him after he witnessed Fafnir's willpower and determination to protect Asia from Rizevim.

Issei is noted be be a very friendly person, able to become friends with anyone. Azazel stated that he has the ability to win over the trust of others easily and doesn't discriminate against anyone as others can feel at ease with him due to him not resenting anyone, with Azazel calling that ability a talent of Issei's. Issei's ability to attract companions, allies and enemies is further enhanced by him being the Red Dragon Emperor.

According to Cao Cao, despite Issei's lack of natural talent and demonic power, Issei's ability to attract others by holding dragon powers is top notch compared to previous Red Dragon Emperors, as Cao Cao believes that Issei will become the most dangerous Red Dragon Emperor. His ability to obtain the trust of other is so great that the residual memories of the past Red Dragon Emperors sacrificed themselves to protect him from Saklas's curse.

After coming back from the dead with by using Great Red and Ophis' power, Cao Cao commented that Issei's power to attract the strong is scary due to it attracting powerful beings like the Dragon Gods to aid him. According to Azazel, Issei makes a lot of irregular phenomena occur, for instance; a lot of Sacred Gear possessors near Issei were able to awaken irregular Balance Breakers (such as Yuuto, Gasper and Saji). Ophis stated that Issei is as strong as the number of companions he has. According to Azazel, Issei has the natural ability to make supernatural girls fall in love with him, while Millarca Vordenburg stated that most of the men who meet Issei become fascinated with him.

While initially being confused by his popularity among the devil children due to Oppai Dragon, Issei eventually embraced the role of being the Oppai Dragon and began acting as a hero for the children as was demonstrated in Netherwirkd, where he carried the wishes of child fans during his match with Sairaorg Bael, promising to defeat him for the sake of Rias and the children who believed in him.

Issei has placed the his desire to protect the children of the Netherworld and of the other factions as one of his goals as seen when he defeated various foes who threatened the children and their dreams such as Shalba Beelzebub, Grendel, and Erebus. In fact, due to Shalba's insanity and him promising to kill the children of the Netherworld for rejecting him as a Satan, Issei killed him to stop his malice from reaching the children.

In battle, Issei is sometimes very stubborn, and due to his emotions, he often charges ahead towards his enemies without a second thought whenever his comrades are insulted, treated badly, or easily defeated. Azazel has stated that it is one of Issei's bad habits. Lately, he has started to become more tactical in his battles, using technique-type strategies to defeat opponents, as shown when he used the abilities of the Wyverns in a unique way to defeat Euclid Lucifuge.

Issei also displays strong moral principles, as seen when he initially refused to actually kill his enemies. Even after killing Shalba Beelzebub, Issei still rarely ever kills his enemies and prefers to either let others do so or simply let them face arrest. While Issei can carry grudges, he is not above forgiving his enemies and becoming friends with them due to his kindness, as seen with Vali Lucifer, Toujou Kuroka, Cao Cao, Nyx and Karl Ernst Krafft.

๊Issei has difficulty remembering people's faces and names. However, Issei can remember the names of noticeable individuals even when they did not directly tell him their names. Issei becomes extremely like and favorite around nude or immodestly dressed women, a fact both Rias Gremory and Himejima Akeno have teased him for. Issei is often disrespectful when talking to those older than himself, calling Sun Wukong, Odin and Zeus "gramps" and referring to several of the other gods by their given names without using honorifics.

## Equipment

**Boosted Gear** (赤龍帝の籠手(ブーステッド･ギア), *Būsuteddo Gia*): Issei's Sacred Gear and main weapon. The Boosted Gear is one of the 13 Longinus which holds the spirit of the Welsh Dragon, the Red Dragon Emperor, Ddraig, one of the Heavenly Dragons. It is said to have the power to kill a god when fully mastered. Boosted Gear takes the form of a red gauntlet on the wielder's left hand that has the ability **Boost** , which doubles the user's power every 10 seconds without limit; and its sub-ability which can **Transfer**, the multiplied power to a being or object and it can even be focused on certain parts of the user's body such as the eyes for enhanced vision. Issei can use Boosted Gear to strengthen his physical abilities and demonic power. Later, it gained **Penetrate** to bypass any defensive abilities (including Rizevim's Sacred Gear Canceler) that would otherwise prevent his attacks from landing, however, it does not negate the deactivation of Balance Breaker. Penetrate's effects can also be channeled through any part of the body, such as the eyes, making it capable of seeing through anything, even women's clothing.

* **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*): The Balance Breaker of Boosted Gear that creates a Red Dragon Armor and Issei's primary battle form. Issei first activated his imperfect version of Scale Mail in Chapter XXX, by making a pact with Ddraig by giving his left hand to the latter. During his first battle against Vali Lucifer, Issei used a bracelet given to him by Azazel which allowed him to use the imperfect version of Scale Mail for less than 15 minutes. Issei completed his Balance Breaker during his fight against Kuroka, poking Rias' breast to trigger the evolution. From this point, Issei can **Boost** without the 10-second limit and it strengthens his powers and abilities. At the back of his armor, there are two rocket boosters that give a temporary boost of speed and flight. After the activation of the Juggernaut Drive, Issei's Scale Mail gained a pair of retractable Dragon Wings with Pteranodon-like claws that he can use as arms.
* **Juggernaut Drive** (覇龍(ジャガーノート・ドライヴ), *Jagānōto Doraivu*): A form unique to the Boosted Gear, Divine Dividing, Zephyr Shift and Burning Soul. The Juggernaut Drive temporarily removes the seal placed on the Heavenly Dragons granting the user immense power. The Juggernaut Drive, however, causes the user to lose sanity while having their lives devoured by power. Issei indirectly activates an incomplete version of this form when he thought Asia was killed by Shalba Beelzebub with the negative emotion overpowering him thus triggering the Juggernaut Drive. In this form, Issei's speed is greatly increased to the extent that it can be hard for one's sight to follow. This form is also capable of creating Dragon arms and blades from the gems of the armor. It contains a small cannon within the mouth of the helmet that shoots out a laser beam.
	+ **Longinus Smasher** (ロンギヌス・スマッシャー, *Ronginusu Sumasshā*): It is finishing that is the most powerful attack of the Boosted Gear. A launcher appears from the chest of the form that is capable of shooting a powerful energy beam of immense destructive power.
* **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*): The Illegal Move Triaina is a specialized technique used by Hyoudou Issei that changes his Scale Mail armor into three different forms based on the Evil Pieces system.
	+ **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*): Triaina's Knight form. In this form, Issei possesses enormous speed that far surpasses Sairaorg's speed, but to make full use of it, Issei must shed his excess armor, causing it to become thin to the point where it has low defense, making him vulnerable to powerful attacks.
	+ **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*): Triaina's Rook Form. In this form, Issei possesses a massive amount of power and defense but has a low body maneuvering speed because of the massive, thickened armor.
		- **Solid Impact** (ソリッドインパクト, *Soriddo Inpakuto*): It's respected finishing move that delivers a punch that has its power and speed increased by nailing the percussion hammer located at his elbow.
	+ **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*): Triaina's Bishop Form. In this form, Issei possesses an enormous amount of demonic power, which he applies it to the two cannons at the back of his armor.
		- **Dragon Blaster** (ドラゴンブラスター *Doragon Burasutā*): It's respected finishing move that is a severely boosted equivalent of his Dragon Shot capable of leveling battlefields and briefly warp space-time. The drawbacks to that the amount of time it takes to charge the cannons and stamina lost with each shot.
* **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*): The Scale Mail's Queen form that is achieved by gaining the "True Queen". This form 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. In this form, Issei is capable of using enhanced versions of the Illegal Move Triaina's abilities. This form, however, is still unstable and requires mastering the three forms of Illegal Move Triaina to stabilize its powers. In Chapter XXX, it is revealed that Issei can enter True Queen without having to chant, and due to Diabolos Dragon God mode, its power has been increased.
	+ **Solid Impact Booster** (ソリッド・インパクト・ブースター, *Soriddo Inpakuto Būsutā*): By morphing one of the armor's gauntlets into Welsh Dragonic Rook's, it allows it for an enhanced version of Solid Impact. It can also be used in tandem with Ascalon to deal further damage to Dragons.
	+ **Crimson Blaster** (クリムゾンブラスター, *Kurimuzon Burasutā*): An enhanced version of Welsh Blaster Bishop's "Dragon Blaster" that shoots a powerful beam from the wings of the armor.
	+ **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*): Originally taking the form of **Dividing Gear** (白龍皇の籠手(ディバイディング・ギア), *Dibaidingu Gia*), a white gauntlet on Issei's right hand which he obtained in his initial battle against Vali in Chapter XXX. Issei placed one of the jewels on Vali's armor to him, creating the Dividing Gear which allows him to use Albion's dividing powers. This ability, however, reduces Issei's lifespan and thus was banned by Azazel. In Chapter XXX, Issei is no longer able to use Dividing Gear after gaining a new ability that allows him to create small white Wyverns from the gems of his armor that can not only **Divide** but can also **Reflect** incoming attacks. Unlike the Dividing Gear, It only requires Issei's stamina rather than reducing his lifespan. In Chapter XXX, Issei manages to change the white Wyverns red at will where they are able to use Ddraig's powers of **Boost**, **Transfer** and **Penetrate** instead.
		- **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*): 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.
		- **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*): Issei also made use of the red Wyverns to attack themselves on Xenovia to create her own variation of the Scale Mail.
	+ **Longinus Smasher** (ロンギヌス・スマッシャー, *Ronginusu Sumasshā*): In Chapter XXX, Issei gains access to this ability when the Red Wyverns used **Boost** on him while in this form. An ability initially available to Juggernaut Drive that from the chest appears a launcher that fires a powerfully destructive beam. This, however, leaves strong fatigue on Issei as it drains a lot of his stamina and depending on how one uses it, it can change the environment. Due to its immense power, this ability has a very long recharge period, lasting at least a month.
	+ **Tail Blade** (テールブレード, *Tēru Burēdo*): Using the Ascalon II Prototype, Issei with his tail of his armor can attack with its blade and lengthened the tail towards his enemies at high speed.
* **Diabolos Dragon God** (龍神化(ディアボロス)－『D×D(ドラゴン)』・G(ゴッド)－,*Diaborosu Doragon Goddo*): This form is the result of Issei borrowing Ophis's power. The armor undergoes further change, as its color changes to be both crimson and black and adding a second set of wings. The power this form grants is so great that it overwhelms Rizevim Livan Lucifer's Sacred Gear Canceler, previously thought impossible. **Boost** has been changed to **D∞D** as Issei powers up in this form with the **∞** symbol emerging on all of the gems. According to Issei, he was able to use this form because his body was created with Ophis's power and Great Red's flesh. Even so, Issei can only sustain this form for a short period of time, followed by pain that makes death pale in comparison. After the battle against Apophis, Ophis adjusted DxD into DxD G, removing the infinity in it and dubbing the form *Pseudo-Dragon Deification* (疑似龍神化, *Giji no Ryūjin-ka*). The form can only be maintained for three minutes at most, with the time limit becoming shorter by attacking or defending to the point it can last only ten seconds. In Chapter XXX, Issei reveals the ability to perform *Partial Pseudo-Dragon Deification (部分龍神化, Bubun Ryūjin-ka*) on his left arm, allowing him to use his Dragon God Aura to a lesser extent with less stamina consumption. With this technique, Issei can combine his Dragon God aura into both Solid Impact Booster and Dragon Shot. In Chapter XXX, after drinking the miracle drug Amrita, Issei can maintain his Pseudo-DxD form for 88 minutes in combat. 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 Devils, Dragons, and Gods aura. Sirzechs notes that Issei's power in this form is even greater than when he was in Pseudo-DxD.
	+ **Infinity Blaster** (インフィニティ・ブラスター, *Infiniti Burasutā*): A further enhanced version of Crimson Blaster, the wings contain cannons that shoot out a powerful blast of red and black aura that leaves even Rizevim injured to an extent that his body is almost fatally damaged. By using it, DxD G's time limit of three minutes is cut down to ten seconds. After drinking miracle drug Amrita, Issei has overcome this weakness and can maintain his armor after shooting Infinity Blaster.
	+ **Longinus Smasher** (ロンギヌス・スマッシャー, *Ronginusu Sumasshā*): The form is not only capable of this move, but the blast it shoots out has been enhanced with the power of infinity, delivering further damage. It can also be used in tandem with the Infinity Blaster, fusing the two blasts into an even more powerful attack.
	+ **Blazing Inferno of Scorching Flames** (燚焱の炎火(いつえきのえんか), *Itsu Eki no Enka*): An ability that was sealed by the Biblical God, which Issei managed to unlock upon using his DxD form for the second time in Chapter XXX. Issei releases a powerful breath of fire that can incinerate anything, flames that never go out once ignited as they continue to burn even after being reduced to ashes and can probably burn the soul until nothing remains. The only existences known to be immune to these flames are Albion, Ophis, and Great Red. Its area of effect can cover an entire island.
	+ **Red Dragon Emperor**:**Ddraig Manifestation** (赤龍帝ドライグ顕現, *Sekiryūtei Doraigu Kengen*): Due to drinking the miracle drug Amrita, Issei gained the ability to summon Ddraig into battle after the [8] countdown on the right gauntlet reaches zero.
	+ **Dress Break DxD** (洋服破壊(ドレスブレイク)・龍神式(ディーディー), *Doresu Bureiku DīDī*): By using his Dragon God aura, Issei can increase his range that halts a female target’s movement, and by strengthening his left hand he can destroy their clothes without even touching them.
* **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 manifests Great Red's power due to him being Issei's familiar thus allowing him to make use of Great Red's aura in Issei's body. The power of this form is so great that it overwhelms Tartarus, a Primordial God of Abyss. It has the power to destroy the entire world with its destructive power. Because of the weapons that were installed in Ryuuteimaru, Issei has gained new abilities in this form. The drawback 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.
	+ **Revelation Barrier**(レベレーション バリアー, *Reberēshon Bariā*): Creates a stronger barrier around the body and is powerful enough to withstand attacks from gods such as Tartarus.
	+ **Revelation Blade**(レベレーション ブレード, *Reberēshon Burēdo*): With four arms of his Apocalypse AnswerArms form, each of the arms carries a aura blade known as ***Apocalypse Ascalon*** (アポカリュプス・アスカロン, *Apokaryupusu Asukaron*), which can easily cut through anything like Tartarus’ tentacles.
	+ **Revelation All-Range Blaster**(レベレーション オールレンジ ブラスター, *Reberēshon Ōrurenji Burasutā*): Similar to Cardinal Crimson Promotion and Diabolos Dragon God, Apocalypse AnswerArms has many cannons to fire powerful blast of auras that can destroy Tartarus’ magic barriers like paper and destroys almost half of his body, even as Issei held back his power. The blast of destructive energy is so powerful it can alter the environment and is strong enough to destroy the artificial space created Dimension Lost. Issei states that the blast is comparable to several Infinity Blaster's blast attacks combined.

**Ascalon** (アスカロン, *Asukaron*): A holy sword given to him by the Archangel Michael, after Ascalon had gone through a number of modification from the current leaders of the Three Factions it could be wielded by Issei, who wasn't a natural-born Holy Sword wielder and dragon host. He was also able to store it inside of his Boosted Gear and the blade emerges from the gauntlet when called. In the anime, it is shown that Issei is able to extend the length of the blade. It is also stated during the Rating Game match against Sona that Ascalon has been imbued with the dragon aura of Ddraig, resulting in an enormous boost in power. Issei learned how to channel the Dragon Slayers power of Ascalon into his punches, allowing him to harm Dragons more easily. Later, Issei managed to combine Ascalon's Dragon Slayer ability with his Crimson Blaster. In Chapter XXX, Issei is also shown to be able to endow Ascalon with **Penetrate** and **Boost**, with the effect staying even after he launches it as a projectile against Vidar.

* **Ascalon II** (アスカロンII, *Asukaron II*): The second version of Ascalon. A long sword that releases holy aura, but is more of a dragon sword rather than a Holy Sword. Issei keeps this sword within his right gauntlet that was free.

**Ascalon II Prototype** (アスカロンII プロトタイプ, *Asukaron II Purototaipu*): The initial prototype model of Ascalon II that Issei used. Due to being created for Issei's use, other people cannot use it which is why The Vatican team that created it left it to him. Although it does not have the same ability as Ascalon II, it is still quite strong. Issei fused it to the tail of his armor to create the Tail Blade ability to suprise enemies with a third arm.

### Formerly

**Mjolnir Replica**: During the battle against Utgard-Loki, Issei was temporarily lent a replica of the legendary war hammer used by the Norse God of Thunder. At first, he was unable to wield it due to harboring evil thoughts, which were his perverted desires, though he became capable of using it after being blessed by Chimune Chipaoti. He later returned the hammer after Utgard-Loki's defeat.

## Trivia

* Issei's birthday is on April 16.
* Issei's name means "Sincere/Honest".
	+ His surname means "Soldier" in reference to him being a Pawn, as pawns are considered to be foot soldiers in chess analogy. So his full name means "Sincere or honest soldier".
* Issei shares the meaning of the series' title that refers to Great Red: "Dragon of Dragons" as he can be considered a mini Great Red, who the title mainly refers to.
	+ In addition, he along with Vali have made another meaning for the title that refers to themselves: "Diabolos (Devil) Dragon".
* Despite not officially being a member of the Gremory Clan yet, he is already considered one by the members (minus Rias) and their servants. After proposing to Rias, she also considers him a member as her future husband and fiance.
* After his visit to the Netherworld and meeting the Gremory family, it is noted that Issei acquired gentlemanly behaviour as well as knowledge about the Gremory clan's history and general knowledge about the Netherworld, due to the fact that Rias chose Issei as her lover and future husband, thus requiring him to obtain noble etiquette to serve as Rias' husband.
	+ Due to the teaching he received from the hired Gremory instructor as well as Venelana Gremory, Issei became skilled at dancing, table manners and very knowledgeable about the Gremory clan's history and general knowledge about the Netherworld.
* Issei is engaged to Rias Gremory, Himejima Akeno, Xenovia Quarta, Shidou Irina, Asia Argento, Toujou Koneko, Toujou Kuroka, Rossweisse and Elmenhilde Karnstein.
* His first kiss was with his childhood friend Shidou Irina, albeit he was asleep.
* In Rating Game fighting-types, Issei is considered a Power-type while also being a good Support-type due to his Boosted Gear Gift ability.
* According to the Nilrem Magicians, Issei's strength is ranked in SS-Class.
* Issei's life force is currently unreadable due to his body being made from Great Red's flesh and Ophis' powers. At its lowest which is zero, it represents "dream" or Great Red and at its highest which is infinite, it represents "infinity" or Ophis.
* According to Ophis' spawn Lilith, Issei smells like her, Ophis, and Great Red.
* According to Elmenhilde, Issei's blood tastes sweet, mellow, and rich, and is absolutely addictive.
* Issei is very popular in Norse mythology as many people in Valhalla were cheering for him.
* His favorite food is cheesecake.
* Issei is considered one of the characters with most rivals in the stories, For example (Vali Lucifer, Saji Genshirou, Kiba Yuuto, Cao Cao, Sairaorg Bael, Cohen Alastor, Riser Phenex, Crom Cruach, Ambrogio Apostolous, Bridget E. Hitler, Elise Nosferatu, Hachiman, Yog-Sothoth and Akashi Kyoya) which is the most in all male characters.
* Issei is the only person outside of the members of the Slash/Dog Team that is allowed to read Vali Lucifer's *Black History Diaries*.
* Issei has a *tokusatsu* show in the Netherworld called *Breast Dragon Emperor Oppai Dragon* (, *Chichiryūtei Oppai Doragon*), which stars him as the main character named **Issei Gremory** and it is considerably popular among the children.
* Issei makes review videos for Oppai Dragon products while acting as the "Oppai Dragon" himself and uploads them to DeviTube. This caused the merchandises' sales to increase.
* It would seem his erotic nature is hereditary, as his father, grandfather, mother and grandmother all have a erotic nature too, with his father and grandfather also seeking to create a harem when they were younger and his mother teaching Asia about the naked apron while his grandmother teased Issei and Asia about the two of them having sex together and creating a child.
* According to Kiryuu, Issei is well endowed, as she believes that he can satisfy both Asia and Rias with his size.
* Issei has a secret stash of his porn collection that he kept perfectly hidden within household goods inside the closet located in an unused room, he was surprised to hear that some of the girls not only found it but also have been watching them.
	+ According to Motohama, Issei's favorite eroges are ones that focus on princesses and girls from socially high class families. Issei speculates that his taste must be influenced due to his feelings for Rias.
* Issei has broken off all the engagements of the female characters placed into one, (Rias, Kiyome, and Rossweisse) all of which have fallen in love with him as a result.
* Issei is shown to be a talented sculptor as he was able to create a perfect clay replica of Rias.
* Issei is good at sewing, as he was able to sew together headbands for the entire Occult Research Club in preparation for the dodgeball tournament.
* Issei has a strange reaction to alcohol, as he becomes more serious and shy when drunk.
* Issei is very good at giving massages, so much so that it's too erotic for women.
* Issei is the only man in existence to have seen Gabriel in a bikini, as well as the most beautiful women in all of Heaven who serves under her; in an old school swimsuit, transparent negligee, and athletic clothing.
	+ He is also the second man to see Sona Sitri in a swimsuit aside from Saji Genshirou.
* Issei's first-ever meeting with Asia may have been foreshadowing to the relationship between Cleria Belial and Yaegaki Masaomi, as at first, Issei and Asia similarly to Cleria and Masaomi, were forbidden from seeing each other in the same town; Kuoh Town due to the Devil's side and Angel's side still at feuds with each other.
* Issei is being supported by the New Satan Lucifer faction due to the fact that he is Sirzechs Lucifer's future brother-in-law, as they hope to boost his political influence and bring him inot their faction.
* After the defeat of the Hidden Khaos Brigade, Issei is considered as a potential candidate for the new Satans.
	+ Sirzechs wants to create a new seat for Issei under the title ***Diablo,*** as in the Revelation of Apocalypse, it is recorded that the terms of Satan and dragon were synonymous, which suits Issei as he possesses the flesh of Great Red who appears in the Apocalypse. Sirzechs also wants to bestow his title of *Crimson Satan* to Issei.
* Issei is one of the protagonists of the erotic doujinshi called "*Prince x Beast*" alongside Kiba Yuuto, that the Kuoh Academy Manga Club produces, as it is based on the misunderstanding that the female students have about Issei's and Yuuto's relationship, with the manga being popular among the female students of the academy.
* Issei is a fan of Dragon Ball (Drag-so Ball in the Anime and Manga).
	+ He sometimes likes to create Gundam plastic models when he has personal free time.
* Issei is shown to have liked fishing when he was younger but gave up on it after he destroyed his father's favorite fishing rod. However, he regained his passion for fishing later on.
* Issei has loved robots and space battleships since he was a child.
	+ This could explain why he was most interested in Harley Keener and Unknown Dictator out of the new rookies in the Azazel Cup.
* Issei's appearance is based on Kazuma Torisuna from **s-CRY-ed** because the author is a fan of the series.
* In the Light Novel, Issei's Dragon arm is depicted as a scaly Dragon arm that covers his entire left arm, while in the anime, his Dragon arm is replaced by the Boosted Gear.
	+ The manga depicts Issei's Dragon arm as a combination of both.
* Supposedly, one of Issei's power-ups was to involve sucking Rias' breasts. Unfortunately, that was already too much for Fujimi Shobo, so the author resorted to something else.
* In the anime, Issei shows symptoms of PTSD and trust issues thanks to Raynare.
* In the short story "25 (Twenty Five) at the Clubroom with Rias-buchou!", Issei was stated to have black hair; however, the anime and light novel illustrations portray him as having brown hair.
* Issei was originally envisioned with Kiba's character traits but later changed into a pervert because Ishibumi felt those character types were too "weak" for the main character.
* Issei was originally going to be just a human who helps Asia Argento.
* In the English dub, Issei’s nickname Oppai Dragon is Grabbin Dragon.
* His seiyū, Yuki Kaji, eventually married Ayana Taketatsu, the seiyū of Koneko, on June 22, 2019.
* Issei's is included among the developing list of the **Top 50 Strongest Beings of Draconic Deus**.
	+ For now, he is ranked as the 2nd Strongest Being.