Gylfaginning in the context of "Vili and Vé"

The Prose Edda, also known as the Younger Edda, Snorri's Edda (Icelandic: Snorra Edda) or, historically, simply as Edda, is an Old Norse textbook written in Iceland during the early 13th century. The work is often considered to have been to some extent written, or at least compiled, by the Icelandic scholar, lawspeaker, and historian Snorri Sturluson c. 1220. It is considered the fullest and most detailed source for modern knowledge of Norse mythology, the body of myths of the North Germanic peoples, and draws from a wide variety of sources, including versions of poems that survive into today in a collection known as the Poetic Edda.

The Prose Edda consists of four sections: The Prologue, a euhemerized account of the Norse gods; Gylfaginning, which provides a question and answer format that details aspects of Norse mythology (consisting of approximately 20,000 words), Skáldskaparmál, which continues this format before providing lists of kennings and heiti (approximately 50,000 words); and Háttatal, which discusses the composition of traditional skaldic poetry (approximately 20,000 words).

In Norse mythology, Narfi (Old Norse: [ˈnɑrve]) is a son of Loki, referred to in a number of sources. According to the Gylfaginning section of Snorri Sturluson's Prose Edda, he was also called Nari and was killed by his brother Váli, who was transformed into a wolf; in a prose passage at the end of the Eddic poem "Lokasenna", Narfi became a wolf and his brother Nari was killed.

In some versions of Norse mythology, Váli was one of the sons of Loki. He is mentioned in the Gylfaginning section of Snorri Sturluson's Prose Edda, chapter 50, possibly by confusion of a reference to Váli, son of Óðinn as binding Loki.

In the account in Gylfaginning, after the death of Baldr the Æsir chase down and capture Loki:

Angrboða (Old Norse: [ˈɑŋɡz̠ˌboðɑ]; also Angrboda) is a jötunn in Norse mythology. She is the mate of Loki and the mother of monsters. She is only mentioned once in the Poetic Edda (Völuspá hin skamma) as the mother of Fenrir by Loki. The Prose Edda (Gylfaginning) describes her as "a giantess in Jötunheimar" and as the mother of three monsters: the wolf Fenrir, the Midgard serpent Jörmungandr, and the ruler of the dead Hel.

Hel (Old Norse) is a female being in Norse mythology who is said to preside over an underworld realm of the same name, where she receives a portion of the dead. Hel is attested in the Poetic Edda, compiled in the 13th century from earlier traditional sources, and the Prose Edda, written in the 13th century. In addition, she is mentioned in poems recorded in Heimskringla and Egils saga that date from the 9th and 10th centuries, respectively. An episode in the Latin work Gesta Danorum, written in the 12th century by Saxo Grammaticus, is generally considered to refer to Hel, and Hel may appear on various Migration Period bracteates.

In the Poetic Edda, Prose Edda, and Heimskringla, Hel is referred to as a daughter of Loki. In the Prose Edda book Gylfaginning, Hel is described as having been appointed by the god Odin as ruler of a realm of the same name, located in Niflheim. In the same source, her appearance is described as half blue and half flesh-coloured and further as having a gloomy, downcast appearance. The Prose Edda details that Hel rules over vast mansions with many servants in her underworld realm and plays a key role in the attempted resurrection of the god Baldr.

In Norse mythology, Ginnungagap (old Norse: [ˈɡinːoŋɡɑˌɡɑp]; "gaping abyss", "yawning void") is the primordial, magical void mentioned in three poems from the Poetic Edda and the Gylfaginning, the Eddaic text recording Norse cosmogony.