Hyoudou Issei

**Others*** Aurelion Aurora
* Chimune Chipaoti
* Eos
* Elysia
* Hachiman
* Hikari Yuki
* Ithaqua
* Mastema
* Morgana Nightwalker
* Nyarlathotep
* Ota Mayuko
* Ryuuteimaru

**Adopted Childrens*** Ophis
* Lilith

**Doppelgänger**

* Hyoudou Izumi

**Others**

* Great Red
* Eurynome
* Yaldabaoth
* Ubbo-Sathla

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## Personality

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## 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, Angela 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.