User blog comment:Crimson and Darkness/Volume 25 discussion blog/@comment-12.96.67.34-20180402220813/@comment-73.57.25.92-20180402221758

He was born with two longinuses, as it says in this post by the jap wiki guy(The last Valkyrie is Scwertleite (シュヴェルトライテ) NOT Waltraute, whoever translated it before cut off the first シ. During the game, she and the other [Pawn] Valkyries are so shocked on learning that Rose had kissed that they left openings and were defeated.

Brünnhilde is a transcendental beauty exceeding Rose. She has succeeded the name of the most powerful Valkyrie that has been passed down the generations.

It was the "old maids" of Odin's family (Fulla, Hlín, Gná; all goddesses connected to Frigg) that insisted that the still-single Vidar marry (despite his many lovers).

"Aeon Balor" is apparently not Gaspar's nickname, but the new name given to his neo-Longinus.

Ruval's team is named "Team Phoenix" (kanji reads "Immortal Bird"). His success in the Azazel Cup was achieved through the aid of Egyptian mythology. His members include the Egyptian "Spirit-bird of Immortality Bennu" (said to be the origin of phoenix) and the owner of neo-Longinus "Unknown Dictator"

Team names: Team Vajra (Indra), Team Asura (Mahabali), Team Black* (Surtr), Team Babel Belial (Diehauser). [*] Surtr's team name is only given in kanji with no kana indicating special readings. If that is how it appears in the raws, I at least suggest translating it into an appropriate Nordic term.

Kanzaki Mitsuya is a natural-born dual Longinus possessor, an existence rarer than Vali. He, along with Kirino Shizuka, is a player of the reality-altering game INNOVATE, commonly called "Denpachi" and has an antagonistic relationship with Ajuka. His nicknames include "First Dark", "One Who Deceives God", and "Cross Times Kiss (X×X)". His Longinus seem to have the form of blue (Innovate Clear) and black (Telos Karma) mobile terminals.

Vidar's Midgardsormr-contract armor, "Ragnarök Earth Berserk" is an example of a Norse imitation of the Sacred Gear system created with help from Grigori and the power of Yggdrasil. Continuing on, interesting info from Slashdog Vol 2:

Khaos Brigade was originally formed by the rogue Grigori leader (fallen angel) Satanael and his students/disciples who were formerly members of "Nephilim Abyss", also known as the "Abyss Team", a sub-group of Grigori's "Nephilim" consisting of heinous Sacred Gear users.

Lavinia (17, now 21) was for 4 years the disciple of the "Witch of the South" Glinda from the mage group "Wizards of Oz", who discovered her as an 9-year-old orphan while investigating Sacred Gears in the world. She was transferred to Grauzauberer at the age of 13 as part of an interchange program. Walburga was the disciple of the second generation "Witch of the East" Augusta.

"Oz", which is a dimension created in the dimensional gap and maintained by the power of the four witches from their castles and the group's boss (presumably the Great Wizard) from the Emerald City at the center. The group is comprised of mages/magicians who desired to focus completely on magic without interference, and suffered infighting until recently (as of Slashdog, set 4 years before HSDxD). They seek (?) the Three Demon Beasts: Cowardly Leo, Dead Lumberjack, and Rampage Scarecrow.

Himejima Suzaku (17, now 21) looks a lot like a "darker version" of Akeno based on her picture. She uses shikigami, excels at flame jutsu, and knows taijutsu.

Ouryuu's predecessor was known as Nakiri Nakagami no Ouryuu.

In addition to Minagawa Natsune (Qióngjī) and Samejima Kouki (Táowù), the remaining Four Fiends holders are Nanadaru Shigune (Tāotiè), who joins Nephilim, and Koga Hyousuke (Húndùn), who has not as of volume 2. Tobio's childhood friend, Toujou Sae, also joins Nephilim.

Whoops, correction for Lavinia. She was picked up by Glinda of Oz at age 9 and travelled with her for 4 years learning about magic and sacred gears (such as her longinus) before being left with Grauzauberer in order to let her be with magic-users her same age. Surtr's name means "black" or "swarthy one", thus his team name directly revers to his own. In Old Norse, black is svartr, thus it could be called Team Svartr.

Vidar's dragon armor should probably be corrected to "Ragnarök Ás Berserk" [終末大帝の龍装（ラグナロク・アース・ベルセルク）]. アース can be TL both as "earth" and as "ás", the singular form of "æsir". It is a 準神族兵装 , the Asgard equivalent to artificial SG, and has a special move called "Fimbulvetr Shoot".

The five neo-Longinus are: Gaspar's "Aeon Balor" [時空を支配する邪眼王（アイオーン・バロール）], which is the new name for "Forbidden Invade Balor the Beast" after its official recognition as a Longinus; "Alphecca Tyrant (Unparalleled Crown of the Abyss)" [深潭の蓋世王冠（アルフェッカ・タイラント）], which is a Relic, the Holy Nail (though the kanji makes it sound more like the Crown of Thorns); "Unknown Dictator" [機界皇子（アンノウン・ディクテイター）], which seems to have power of machines or something like that; "Nereis Kyrie" [終わる翠緑海の詠（ネレイス・キリエ）]; and "Star Buster Star Blaster (Star-busting Sword & Star-piercing Gun)" [星砕剣と星穿銃（スター・バスター・スター・ブラスター）], which us a combo of longsword and rifle, wielded by Shooting Star [シューティング・スター], the [King] of the underdog, human-only(?) Team Shooting Star.

Oh, and Ise's "training" under Indra was focused on powering up his dragong god transformation by basically drinking a simplified version of Amrita. As it is still a drink meant for gods, it was mostly poisonous for Ise despite his survival, but it did allow Chichigami to directly speak to him. Indra only trains Ise because it would make the tournament more interesting/amusing.

I could have posted this on that wiki as well, but was too lazy. Some of it was relevant to this series, the rest just interesting, hence why here. Still waiting to update the wiki overall until TLer finishes updating Volume 1 (from WN to LN version) and moves on to Volume 2. "Nephilim" is a Grigori organization/training center, one that Tobio & co. joins following the events of V1.

Except for Artemis (and Midgardsormr via Vidar's previously mentioned armor), the others don't participate in the match. I'm not sure, but from the sound of it they're additional members added afterwards (or were reserve members). Interestingly, Orthrus and Hydra (I forget whether Sphinx was included), along with Cerberus and Ladon, are the children of Typhon.)