Odin {oh'-din} also known as “Woden”, “The All Father”, “Othinn”, “Votan” and sometimes fondly as “Old One Eye”.
Odin is the leader of all the Irdin gods and in Irdin mythology he is the creator of all things. He is the god of battle, knowledge, wisdom, poetry and inspiration.
In Norse mythology  Odin is the chief of the gods and the ruler of the universe. He was the son of the frost giant Bor and the giantess Bestla. Early in his career, together with his brothers Vili and Ve, Odin overthrew the primeval giant Ymir and fashioned the world from his remains.
Odin, his wife Frigg, and the other major Norse divinities--Thor and Tyr--live in Asgard, near which is located Valhalla, where Odin was believed to feast with the spirits of slain warriors. At Ragnarok, the "twilight of the gods," Odin will lead his army against the giants led by Loki. Odin will be devoured by the wolf Fenrir but then be avenged by his son Vidar. Odin's sacred bird is the raven, and his principal weapon--in addition to his powerful runes, or magical spells--is the spear. He is depicted as tall, bearded, and one-eyed, having exchanged his other eye for wisdom.

Frigga is the wife of Odin and the goddess of clouds, sky, married love and wives.
In the Irdinian mythology, Frigga was the supreme goddess and the principal wife of Odin. She was goddess of the sky and,  presided over marriage. The myths portray her as very wise and very silent.

Thor is the great heroic god of the Irdin religion. He is the god of weather (particularly thunder), crops and battle. He is also noted for his immense strength and the magical artifacts he posses in particular his magic hammer (Mjolnir).

Sif is the goddess of excellence and skill in combat she is also the wife of Thor.

Aegir is the god of oceans and is also closely related to the giants.

Baldur is the god of beauty and charisma also innocence and light.
In Norse mythology, Balder was the god of light and beauty. The most beloved of the gods, he was the son of Odin and Frigg and the husband of Nanna, goddess of the Moon. A famous Norse myth tells how Loki, the evil giant, had Balder killed with a dart made of mistletoe, the only thing in the world that had not promised his mother it would never harm him. Because Balder was the favorite of the gods, it was said that he would return to Asgard, the home of the gods, at the end of the world.

Bragi {bray'-gee} is the god of poetry and song and sometimes storytelling.
In Norse mythology, Bragi was the god of wisdom, poetry, and eloquence, whose song celebrated the deeds of warriors. His wife was Idun, the goddess of youth. Bragi was fathered by (or as likely was a manifestation of)

Forseti is the god of Justice.

Frey {fray} is the god of fertility, peace and joy, He is also the twin brother of Freya.
In Norse mythology, Frey (or Freyr) was the god of fertility, peace, and prosperity. He was one of the Vanir gods, who were responsible for wealth, and the brother of Freya. Among his magical possessions was a sword that he gave to Skirnir, who in return obtained him Gerda, the most beautiful woman in the world, as his wife.

Freya {fray'-ah} - is the goddess of love and passion and human fertility. She is the twin sister of Frey.
In Norse mythology, Freya, or Freyja, was the goddess of beauty and love. A beautiful, blonde, blue-eyed young woman, she was the sister of Frey and in later traditions the wife of Odin. Freya claimed half of the heroes slain in battle, carrying them to her realm of Folkvang in Asgard. Most of her myths concern attempts by the giants to abduct her. In Teutonic mythology, she was fused with the goddess Frigg. Friday is named for her.

Heimdall {haym'-dahl} is the god of guardians. He is the god who guards the end of the rainbow bridge and none may pass without his permission, not even Odin.
In Norse mythology, Heimdall was god of the dawn and watchman of Bifrost, the rainbow bridge leading to Asgard. His hearing was so keen that he could hear the grass growing.

Hel - she is the goddess of the underworld and daughter of Loki.
In Norse mythology, Hel, the daughter of Loki, was the goddess of death who ruled over the cold, dark underworld of Niflheim. She had a hideous body, half black and half blue. Her table was Hunger, her knife Starvation, her bed Care, and her attendants Delay and Slowness. Her domain was also sometimes called Hel.

Idun is the goddess of spring and youth. She also provides the gods with her apples of youth each year.

Loki {loh'-kee} is the trickster god who is always causing mischief and always scheming.
In Norse mythology Loki was the spirit of strife and envy. The son of a giant, he lived among the gods at Asgard, where he continually caused them trouble but aided them with his cunning. After he contrived the death of Balder, however, the gods chained him to a rock below a serpent whose mouth dripped venom. Loki's wife, Siguna, caught the drops in a cup, but when she turned away to empty it the venom fell on Loki's face and he writhed in anguish, causing earthquakes. Loki was to remain bound until the final battle of Ragnarok, in which he would lead the forces of evil against the gods.

Tyr is the god of the sword and courage. He is also the one handed god as he lost his hand to the Fenris Wolf.
Uller is the god of winter. He is the son of Sif and stepson of Thor, his father is said to be a frost giant. He is also a god of hunting and archery for which he has a passion for.

Niord is the god of the winds and sea and has the power to still tempests. He is also the god of summer.

Skadi is the goddess of winter and daughter of the giant Thiassi. She is also married to Uller yet in the past she was Niord’s lover.

Lesser Entities of the Irdin Religion

The Norns are lesser gods who dictate the fates, there are three of them one for the past (Urd), one for the present (Verdandi), and one for the future (Skuld).
In Norse mythology the Norns were three female deities whose spinning and weaving determined the fates of humans and gods alike. They were the guardians of Urda's well, which watered the root of Yggdrasil that extended into Asgard. In some myths the Norns are described as three giantesses, in others as a giantess, an elf, and a dwarf. Often one of them negated the gifts of the other two or turned them into a curse.

Thrym is a great frost giant and is the Lord and Deity of all frost giants. He is also the mortal enemy of Surtr.

Surtr is the great fire giant and is the Lord and Deity of all fire giants. He is also the mortal enemy of Thrym.

The Valkries {val-keer'-eez} are warrior maidens of great beauty who carry the dead of a battlefield.
In Norse mythology the Valkyries were nine semidivine virgins--priestesses of the mother goddess Freya--who rode armed on horseback to battlefields and decided who would live and who would die. They carried half of the dead heroes to Valhalla, Odin's palace in Asgard, and waited on them at their feasts. Their leader was Brunhild.

Brunhild {broon'-hilt}
In Norse mythology, Brunhild was the leader of the Valkyries. When she disobeyed Odin and spared the lives of Siegmund and Sieglinde, the parents of the hero Siegfried, Odin punished Brunhild by putting her to sleep surrounded by a ring of fire. Siegfried rode through the fire to win her love. But under the influence of a magic potion that made him forget Brunhild, he married Gudrun. Later, he returned in disguise to win Brunhild for Gunther, Gudrun's brother. Believing Siegfried had forsaken her, Brunhild married Gunther, but when she discovered the deception she had Siegfried murdered and then killed herself on his funeral pyre.

Fenris {fen'-rir}Wolf is the offspring of Loki and a giantess who is said to be the one to devour Odin when Ragnarok occurs.
In Norse mythology Fenrir was a ferocious wolf, the offspring of Loki and the giantess Angerboda. The gods subdued him with a magical chain, Gleipher, but in the process he bit off the hand of the god Tyr.