You will know soon enough. Get stronger for that coming day. I will give you my power any time you want. However, keep it in your mind that it will come with a sacrifice of something great. I will give you something that is worth the sacrifice. You can show it to those who laughed at you. The existence of a “Dragon” that is.

– Ddraig to Issei Hyoudou in Volume 2, End Game

Ddraig is one of the Two Heavenly Dragons and the arch-rival of Albion. He is called the Red Dragon known as the Welsh Dragon, Dragon Goch, Red Dragon Emperor and Red Dragon Emperor of Domination, who resides within the Longinus, Boosted Gear, wielded by Issei Hyoudou. He is feared among the Angels, Fallen Angels, Devils and the various other factions in the world for his destructive powers, which are said to be able to kill both Gods and Satans.


Ddraig is a dragon with the appearance of a large red Western Dragon, with a long neck and green eyes. He also has red and golden spikes throughout his body.


Ddraig's personality has changed a great deal as time has passed. At first, he had a great deal of pride in himself, though he admits that he had an intense rivalry with Albion, the other Heavenly Dragon. Since that time, he has become somewhat depressed because of the fact that he has become known as the Oppai Dragon and the Breast Dragon Emperor. Ddraig even requires counseling and medication because of it. Ddraig has shown that he cares a great deal about his current host, Issei, as much as Albion cares about Vali, despite the fact that their hosts are the ones responsible for their demeaning nicknames.

He has also shown that he really likes his current lifestyle, which doesn't involve fighting his rival every time they meet, but knows that there will eventually be a time when he and Issei must fight Albion and Vali.

It also noted that he has an extremely high level of intelligence and is also wise enough to give advice to others especially to Issei, as he can tell all things about mythological things just like Azazel. Although he and Albion are powerful enough to challenge Gods and Satans, they both agreed to avoid fighting Evil Dragons, claiming that they are more brutal than other dragons.


Heavenly Dragons

Ddraig fighting against Albion

In the past, Ddraig was a fearsome Dragon known to have powerful flames that can incinerate anything, including Gods, and will never go out till they burn the opponents to ashes. Ddraig eventually met Albion, who was immune to his flames. Happy to meet someone who can rival him, Ddraig seals his flames and started to compete with Albion to improve themselves, developing techniques such as Boost and Transfer, and both eventually became famous as the Two Heavenly Dragons. During their many battles to improve themselves, both the Heavenly Dragons rampaged in the Realm of the Dead. Ddraig also fought against Grendel and Níðhöggr at an undisclosed time in the past.

Before the start of the Great War, Ddraig had borrowed some of Tiamat's legendary treasures for his upcoming battle with Albion and was accidentally destroyed during the fight. Since then she has been chasing after Ddraig and his hosts for a long time, to retrieve her stolen treasure, however Ddraig always detected her presence and asked his hosts to run away. This was because he could not return her treasures and felt that he would be chased for it.

At one point, while continuing his battle with his arch-rival, the Vanishing Dragon, Albion, which 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 being placed inside the Sacred Gear "Boosted Gear".

Over the centuries, Ddraig has met with countless hosts possessing his Sacred Gear, some of whom have faced off against possessors hosting Albion's spirit to continue the Dragon's long lasting rivalry, up until his current host: Issei Hyoudou.


The Red Dragon Emperor's Awakening

Ddraig appears in the beginning of Volume 2, introducing himself to Issei. He reappears after Issei’s defeat at the hand of Riser Phenex, telling him about the "White One". Issei made a deal with Ddraig to temporally use Balance Breaker so he can face Riser again to save Rias in exchange for his left arm which was turned into that of a Dragon.

Birth of the Breast Dragon Emperor

In Volume 3, after being silent for a while, Ddraig had a conversation with Issei regarding "White One"; Albion, the White Dragon Emperor. The two eventually start a teacher-student relationship about many things regarding the mythological world, while Ddraig also gives advice to Issei during his fights, such as the later fight against Kokabiel. The said fight was then interrupted by Vali Lucifer, the current host of the White Dragon Emperor, who finished off Kokabiel instead. Ddraig briefly talks to Albion about the awaited match between their current hosts.

In Volume 4, after Issei meets Vali again, Ddraig explains the history between him and Albion. During the crisis with the Khaos Brigade attack, Ddraig cooperates with Issei in his fight with Vali and even supported him surviving in taking Vali's ability which created the Dividing Gear.

In Volume 5, when Issei attains the Balance Breaker after poking Rias' breasts, Ddraig was happy but sad at the same time. He then told Issei that he is seriously going to cry someday.

In Volume 6, Ddraig cried for the first time after hearing the television announcer of the Underworld calling Issei the "Breast Dragon Emperor" and "Oppai Dragon" after the Rating Game with Sona Sitri. After Shalba Beelzebub supposedly killed Asia Argento, Ddraig warned Rias to stay away from Issei as he was about to enter Juggernaut Drive. Later, while Issei was unconsciousness due to the effects of Juggernaut Drive, Ddraig explains to Azazel the usage of the form and its major drawbacks, such as the user going berserk and using up most (if not all) of their life energy.

The Heroic Oppai Dragon

In Volume 7 when attempting to talk to Albion, who shunned Ddraig claiming that he does not have any Breast Dragon Emperor rival, the two of them cried together. While crying, Ddraig protested, claiming that it is all Issei's fault as the two of them questioned how the two proud Heavenly Dragons had become like this.

In Volume 10, Ddraig privately contacted Azazel through Fafnir's jewel to ask him to search for a Dragon Counselor as he has been crying unconsciously.

In Volume 11, it is revealed that Ddraig suffered a broken heart at the hands of Issei, crying upon hearing the word "breast", and requires medication as well as counseling (10,000 years, to be exact). However, upon Issei's 'death' Ddraig still states Issei was the greatest host of Boosted Gear ever.

In Volume 12, Ddraig is able to capture Issei's soul and attach it to the Scale Mail, and with the aid of Ophis, transferred Issei's soul to a new body crafted by Great Red from his own flesh. After the battle with Cao Cao, Ddraig found himself exhausted, and fell into a deep sleep, after making Issei think he was dying.

The Legend of Oppai Dragon and his Lively Companions

During the first half of Volume 14, Ddraig was still sleeping after using up most of his energy to help restore Issei's body. He later awakens with the help of Fafnir and Vritra during the attack on Kuoh Academy led by Euclid Lucifuge and Grendel from Khaos Brigade.

In Volume 16, Ddraig tried to save Albion from breaking down mentally due to the appearance of Fafnir, telling him that Fafnir isn't the Dragon that they used to know and proceeded to enter a conversation with Albion, telling their possessors to be quiet for a while. Later, Ddraig was encouraged by Albion after the Two-Heavenly Dragons were mocked by Euclid Lucifuge.

Ddraig was absent for the most part in Volume 17 as he was trying to find clues on how Issei was able to use Albion's lost ability. With Albion, Vritra, and Fafnir's help, they were able to convince the past hosts of Divine Dividing to help them, resulting in Issei being able to use Dividing Wyvern Fairy freely.

In Volume 18, after searching deep within the Boosted Gear, Ddraig manages to unlock the ability Penetrate, which Issei uses to bypass Rizevim's Sacred Gear Canceler.

In Volume 20, when he and his friends went to Agreas, Ddraig re-meets Níðhöggr after a long time, before they fought him. Later Ddraig talks to Rizevim, telling him that he will be the first to witness Issei's new form that Ophis has granted him, Diabolos Dragon and gloats on how he is being overpowered by Issei.

In Volume 21, as the last stand against Qlippoth had commenced, Issei fought with Apophis as Ddraig gave him warnings on his attacks. At Issei's lowest point, he recited the forbidden chant to activate his DxD armor again and while he still proved difficult to beat, Issei eventually turned the Evil Dragon to dust. Ddraig then noticed the consciousness of Trihexa that had appeared before them. That was when Sirzechs also arrived to help and covered himself in his destructive demonic power, to which Ddraig leaked a sigh of admiration towards the Super Devil, calling him in his irregular form a "true monster". Sirzechs laughed while saying his and Issei's transformation was also irregular.

As they fought together with Sirzechs, Ddraig laughed as he noticed elsewhere that his rival Albion had finally cleared his confusion and accepted himself. This prompted Ddrag to also release his sealed power for his partner to use. Issei then unleashed Ddraig's ultimate finishing move, a breath of flames that can incinerate anything directly at the entire island they were on, hoping to completely erase the beast's consciousness. While its spirit was bathed in the flames, it did not cease due to its incredible healing factor. At that point, Issei had reached his limit and fell to the ground, which was when Sirzech and the other mythology leaders initiated their plan to seal Trihexa along with themselves.

In Volume 22, Issei was being promoted to a High-Class Devil; during the ceremony, Ddraig gave his partner words of congratulations for all that he had accomplished within the past year. Sometime after Issei had become engaged to Rias, he prepares himself for the Rating Game World Tournament and asked Ddraig to tag along with him, to which the red dragon showed no objections since since both Vali and Albion will also be participating.

Red Dragon Emperor of the Blazing Truth × White Dragon Emperor of the Morning Star: The True Dragon(s) of the Kuoh Academy

During Issei's fight with Baraqiel, upon confessing and proposing to Akeno, he powered up tremendously as Ddraig commented how as long as it’s related to Issei's desires, the power of the Sacred Gear will instantly elevate.

In Volume 23, Ddraig observed one of Rias' match where Crom Cruach destroyed the field on purpose and it was likely inspired by Issei's previous battle. Issei asked Ddraig if he could beat beat him in a fight, Ddraig responded that he he could for as long as he underwent Dragon Deification, though Issei believed that he probably wouldn't under a time limit. Ddraig goes on to say that the reason for Rias having Crom was because she was rather conscious of Issei for when she would face him or any other powerful being in the game as a countermeasure.

When Issei and Ravel requested to recruit Ouryuu Nakari for the tournament, Ddraig panicked as Tiamat, who just happened to be watching over the boy, was also present. She was mad at Ddraig for never returning her treasured items before he was sealed and avoided her for centuries after that, therefore the responsibility fell onto Issei as his current host to find and return her lost items. Tiamat proposed that should she allow Ouryuu to join them, they must win the tournament and use the victor's wish to gather her treasure.

In Volume 25, during Issei’s time at the Ocean of Milk as he drank the miracle drug Amrita and suffered from its effect, Ddraig was feeling the same pain from inside the Sacred Gear.

Issei & Ddraig V25

Ddraig appearing together with Issei

During the match against Team Leisure of the Kings, as Issei in his DxD form countdown reaches to zero, a deep crimson light was released from the gems on Issei’s armor and took the form of a giant majestic red dragon which was revealed to be Ddraig himself shocking everyone at the Thor Stadium. Ddraig smiles at Issei as he became shocked by his actual appearance and noticed he is wearing his armor despite being separated from him which Ddraig believes is due to how they are connected. Ddraig proudly challenges Typhon and flew to the sky to chase after him while taking his weather attacks head on without taking damage. Ddraig then unleashed his enormous fire breath onto the sky which also burned Typhon who was unable to extinguish the flames. As the Chief-God of Olympus Apollon rushes to aid Typhon by unleashing his divine aura and light towards Ddraig, he stopped the attack by using his wings and counterattacked by using his dragon aura and destroyed his defensive magic via the usage of Boost and Penetrate. Ddraig continues to fight Typhon and Apollon and eventually overwhelmed themm with all of his attacks. Issei and his team then win the match due to Ddraig defeating Typhon. Afterwards, he returns to his Boosted Gear.

Ddraig celebrates Issei’s team victory at the Hyoudou Residence along with his rival teams. Crom converses with Issei and Ddraig in order to express his interest of wanting to fight them both head on with Ddraig agreeing due to wanting to fight Crom with his body and flesh.

Powers & Abilities

Immense Strength: As one of the Heavenly Dragons, Ddraig possesses great strength. Prior to being sealed within the Boosted Gear, Ddraig's power was stated to surpass that of the current Dragon Kings, and he and Albion have been stated to have power rivaling both Gods and Satans. Azazel also mentions that at their prime condition, Ddraig and Albion are far stronger than the three known strongest Evil Dragons: Crom Cruach, Aži Dahāka and Apophis. Ddraig himself claims he has the power to destroy the world several times over simply through brute force. In the past, the previous leaders of the Three Great Factions had to temporarily ally with each other to stop the destructive rampage of Albion and Ddraig which was interfering with the Great War; according to many, he and Albion possesses a power that would place them among the Top 10 "Strongest Beings in the World". His power is further demonstrated when he is temporarily revived due to the effects of the Amrita that Issei drank. He was able to completely overpower Apollon and defeat the King of Monsters Typhon shortly afterwards with relative ease.

Power Multiplication and Transference: One of the powers he developed during his rivalry with Albion. Ddraig is known for his ability to multiply his own powers and transfer that multiplied power into another being or object.

Penetrate: Another ability of Ddraig. It allows Ddraig to penetrate through all defenses.

Immense Durability: In Volume 25, Typhon's powerful lighting storm was unable to inflict any damage at all. Ddraig was also able to repel Apollon's light just by wrapping himself in his aura and flapping his wings.

Dragon Flames: In addition to his Blazing Inferno of Scorching Flames, Ddraig can also use standard dragon fire breath although his is much more powerful and appears to cover the entire sky. He can also enhance it with Boost and Penetrate as he demonstrated in his fight against Typhon.

  • Blazing Inferno of Scorching Flames: Ddraig's ultimate finishing move where he spouts out a powerful breath of flames which can incinerate anything that will never go out once ignited and can probably burn the soul, until nothing remains. Even Gods will be burnt to ashes within these flames. The only ones that they're ineffective against are Albion, Great Red and Ophis. Ddraig sealed this ability after meeting Albion.

Keen Intellect: Ddraig is a very smart and wise dragon, as he can easily teach Issei how to properly utilize and control his hidden and new powers. He is also knowledgeable enough to tell Issei the relationships and history of the Two Heavenly Dragons, the other powerful and active Dragons such as Great Red, Ophis and the Five Great Dragon Kings, as well as information regarding the mythological worlds.

Telepathy: Ddraig can communicate through people, such as when he uses telepathy to communicate with Issei, Albion, Azazel, Rias and other Dragons.

Soul Transferal: Ddraig has the power to transfer the souls of other beings into other vessels. This was shown when he transferred Issei's soul into his armor and then into the vessel made from Great Red's flesh after Issei's original body was destroyed.

Flight: Being a Dragon, Ddraig can fly using his wings.


  • (To Shalba) "—You... Made the wrong choice." (Volume 6, Juggernaut Drive)
  • "I want you to remember him. The man called Issei Hyoudou." (Volume 11, Life...)
  • "Yup, my name is Ddraig. I'm a baby Dragon." (Volume 14, Life 4)
  • (To Rizevim Lucifer) "Son of Lucifer. You think you’re his enemy? Even God of the Bible revered their power — dragons. Whether it’s me, or the Hakuryuukou, or Fafnir, you can’t underestimate us — I could if I wanted, to have destroyed the world a few times over with just brute force. But I haven’t done so, because compared to you, my life is more enjoyable like this." (Volume 18, Life 4)
  • (To Euclid Lucifuge) "Euclid Lucifuge. One Sekiryuutei is enough in this world. It's necessary for you to be defeated by us." (Volume 17, Life 4)
  • (To Rizevim Lucifer) "Shouldn’t you have known when you got involved? My partner — Hyoudou Issei has always been in pursuit of peace and quiet. But, whether it’s that descendent of the old Beelzebub, the leader of the Hero Faction, or even you, the son of Lucifer, you’ve all trampled over that which should not without a shred of hesitation." (Volume 20, Life 3)
  • (To Rizevim Lucifer) "Well, there is no choice but destruction, right? —This is the Sekiryuutei of the Two Heavenly Dragons. …No, this is something a bit different. This is something slightly different from the Two Heavenly Dragons, it should be known as the Cardinal Crimson Promotion — [ Diabolos Dragon]." (Volume 20, Life 3)


  • Ddraig's name comes from the Welsh phrase Y Ddraig Goch, meaning "The Red Dragon". Y Ddraig Goch also appears on the flag of Wales as the country's national symbol.
    • In Welsh orthography, the letter "dd" is pronounced /ð/ as in that, so Ddraig's name should really be read as "Thraig".
  • If Ddraig or Albion were not sealed inside their respective Sacred Gears, their strength would place them among the Top 10 "Strongest Beings in the World".
  • Ddraig has called Issei by his name only once so far in the series.
  • Ddraig's title Red Dragon Emperor (赤龍帝) is loosely based from the name of the Pokemon Entei (炎帝エンテイ).[3]
  • His Penetrate ability is a reference to Son Goku's "Penetrate!" ability in Dragon Ball franchise.


  1. High School DxD novel; Volume 11 Afterwords
  2. Volume 2 Life 0
  3. Ishibumi's twitter