Freyr (フレール, Furēru) is the God of Sacral Kingship in Norse mythology, Freyr briefly appears at the end of Volume 4, discussing the death of the God of the Bible and the current leaders of the Three Factions.
Thor (トール, Tōru) is the God of Thunder in Norse mythology who is associated with thunder, lightning, and storms, son of Odin, and is the older brother of Vidar. He wields the mighty hammer, Mjolnir. He is also Vali Lucifer's older stepbrother. He went into the Isolation Field Barrier to fight Trihexa along with his father Odin and elder brother Baldur. Vidar mentions that he considers Thor as the more suitable leader of Asgard than himself.
Thor is among the Top 10 "Strongest Beings in the World".
Baldur (バルドゥール, Barudo~ūru) is the God of Beauty and the eldest son of Odin, and the older of Thor and Vidar. He was mentioned by Vidar that he joined Odin and Thor in the Isolation Barrier Field to fight against Trihexa.
Hel (ヘル, Heru) is the daughter of Loki and youngest sister of Fenrir and Midgardsormr, and the ruler of Niflheim in Norse mythology. She is strictly monitored due to the influence of the Loki incident. She is a tall, beautiful woman with long hair which is a mix of blue plus red. She first appears in the short story Pavilion Kingdom angry at Team DxD for putting her father in prison.
Gna (グナー, Gunā) is the Goddess who runs errands in other worlds for the goddess Frigg and rides the flying, sea-treading horse Hófvarpnir. She is a maid for Odin's family. She accompanied Vidar for his marriage interview with Rossweisse.
Fulla (フッラ, Furra) is the Goddess who attends to the ashen box and the footwear owned by the goddess Frigg, and, in addition, Frigg confides in Fulla her secrets. She is a maid for Odin's family. She accompanied Vidar for his marriage interview with Rossweisse.
Surtr (スルト, Suruto) is a Norse Fire Giant, as he has a large body that is 25 meters tall even when the body size is modest. He is the source from which the copy, Surtr Second who is the second Rook of Sirzechs Lucifer, originates from. He can manipulate fire that burns down the God-class beings. During the Ragnarok, he is predicted to lead a battalion of giants to ignite the world tree Yggdrasil .
During the Azazel Cup, he entered the Cup as the leader of Team Black, which consists of Norse giants. He manged to qualifying to the main stage complete and proceed to the main tournament. His participation in the tournament caused many gods to abstain from the tournament or to drop out mid-way through the tournament.
Zeus (ゼウス, Zeusu) is the former ruler of the Gods in Greek mythology and one of the Trinity Gods as well as the father of Apollon. He briefly appeared in Volume 10, teasing Azazel about being unmarried, stating that being single is lonely.
Hypnos (ヒュプノス, Hyupunosu) is the Greek God of Sleep. He was created by Nyx and Erebus. Ajuka Beelzebub mentions that he offered his help in order to deal with Ingvild Leviathan's sleeping disease in order to make amends for Nyx’s actions.
Eros (エロス, Erosu) is the Greek Primordial God of Love, who was sought out by Ajuka to help Issei with the Eros Engine, but wouldn't help because Issei wasn’t perverted, due to being under the effects of Alphecca Tyrant. After Issei was cured and restored to normal, Eros offered his cooperation in regards to making the Eros Engine function.
Brahma (ブラフマー, Burafumā) is the God of Creation in Hindu mythology and one of the Trimurti. He, along with Vishnu and the seven major gods sealed themselves to fight 666 and plead to Shiva to protect the world.
Brahma is among the Top 10 "Strongest Beings in the World".
Vishnu (ヴィシュヌ, Vu~ishunu) is the God of Protection in Hindu mythology and one of the Trimurti. He, along with Brahma and the seven major Gods sealed themselves to fight 666 and ask Shiva to protect the world.
Vishnu is among the Top 10 "Strongest Beings in the World".
Varuna (ヴァルナ, Vu~aruna) is the God of Water in Hindu mythology and the current king of Asura after the previous king Vairochana was killed by Indra. He briefly appears in Volume 21, fending off against the Evil Dragons and fake Scale Mails.
Hanuman (ハヌマーン, Hanumān) is the God of Devotion in Hindu mythology. He briefly appears in Volume 21, along with Ganesha to fight against the Evil Dragons and fake Scale Mails.
Ganesha (ガネーシャ, Ganēsha) is the God of New Beginnings in Hindu mythology. He briefly appears in Volume 21, along with Hanuman to fight against the Evil Dragons and fake Scale Mails.
Virochana (ヴィローチャナ, Vu~irōchana) is the former King of the Asura and the father of Mahabali and the son of Prahlada. He fought against Indra during the Asuran war and was killed by him, and his role as king was taken over by Varuna.
Prahlada (プラフラーダ, Purafurāda) is the father of Virochana and the grandfather of Mahabali. He briefly appeared on True Volume 2 during the Rating Game between Mahabali and Indra.
Arjuna (アルジュナ, Arujuna) is the son of Indra, known also as the Great Hero. He is described as a young man of a refreshing look, being a handsome man in his early twenties, wearing armor in battle. He briefly appeared on True Volume 2 during the Rating Game between Mahabali and Indra.
Balor (バロール, Barōru) is the Evil God of Irish-Celtic Mythology with the Evil Eyes that were able to control the strongest Evil Dragon, Crom Cruach. The actual Balor was killed by the God Lugh, while a fraction of his consciousness resides within Gasper Vladi, due to it being embedded into him by the subconcious use of Valerie Tepes' Longinus, Sephiroth Graal.
Aka Manah (アカ・マナフ, Aka Manafu) is the Evil God who has the ability to control people. While not a fighting god, those under his control will lose the ability to distinguish between good and evil. He was sent by Angra Mainyu to aid Meredith Ordinton, as he possessed her. He was defeated and exorcised by Arthur Pendragon.