In Norse mythology

Norse mythology

Norse mythology, a subset of Germanic mythology, is the overall term for the myths, legends and beliefs about supernatural beings of Norse pagans. It flourished prior to the Christianization of Scandinavia, during the Early Middle Ages, and passed into Nordic folklore, with some aspects surviving...

, Váli was a son of Loki

Loki

In Norse mythology, Loki or Loke is a god or jötunn . Loki is the son of Fárbauti and Laufey, and the brother of Helblindi and Býleistr. By the jötunn Angrboða, Loki is the father of Hel, the wolf Fenrir, and the world serpent Jörmungandr. By his wife Sigyn, Loki is the father of Nari or Narfi...

. He is mentioned in the Gylfaginning

Gylfaginning

Gylfaginning, or the Tricking of Gylfi , is the first part of Snorri Sturluson's Prose Edda after Prologue. The Gylfaginning deals with the creation and destruction of the world of the Norse gods, and many other aspects of Norse mythology...

 section of Snorri Sturluson

Snorri Sturluson

Snorri Sturluson was an Icelandic historian, poet, and politician. He was twice elected lawspeaker at the Icelandic parliament, the Althing...

's Prose Edda

Prose Edda

The Prose Edda, also known as the Younger Edda, Snorri's Edda or simply Edda, is an Icelandic collection of four sections interspersed with excerpts from earlier skaldic and Eddic poetry containing tales from Nordic mythology...

. After the death of Baldr the Æsir

Æsir

In Old Norse, áss is the term denoting a member of the principal pantheon in Norse paganism. This pantheon includes Odin, Frigg, Thor, Baldr and Tyr. The second pantheon comprises the Vanir...

 chase down and capture Loki.

Nú var Loki tekinn griðalauss ok farit með hann í helli nökkvorn. Þá tóku þeir þrjár hellur ok settu á egg ok lustu rauf á hellunni hverri. Þá váru teknir synir Loka, Váli ok Nari eða Narfi. Brugðu æsir Vála í vargslíki ok reif hann í [sundr] Narfa, bróður sinn. Þá tóku æsir þarma hans ok bundu Loka með yfir þá þrjá [egg]steina, einn undir herðum, annarr undir lendum, þriði undir knésfótum, ok urðu þau bönd at járni. — Eysteinn Björnsson's edition

Now Loki was taken truceless, and was brought with them into a certain cave. Thereupon they took three flat stones, and set them on edge and drilled a hole in each stone. Then were taken Loki's sons, Váli and Nari or Narfi Narfi Narfi in Norse mythology may refer to the son of Loki or the father of Nótt, the personified night.-Son of Loki:In the Prose Edda book Gylfaginning, Narfi, also known as Nari or Narvi, is a son of Loki and Sigyn who is killed to punish Loki for his crimes. The gods turned his brother Váli into a... ; the Æsir changed Váli into the form of a wolf, and he tore asunder Narfi his brother. And the Æsir took his entrails and bound Loki with them over the three stones: one stands under his shoulders, the second under his loins, the third under his boughs; and those bonds were turned to iron. — Brodeur's translation

An enigmatic stanza in Völuspá

Völuspá

Völuspá is the first and best known poem of the Poetic Edda. It tells the story of the creation of the world and its coming end related by a völva addressing Odin...

seems to refer to this event and was probably Snorri's source. Váli, son of Loki, is otherwise unknown. It has been suggested that the Völuspá stanza actually refers to Váli

Váli (son of Odin)

In Norse mythology, Váli is a son of the god Odin and the giantess Rindr. He was birthed for the sole purpose of killing Höðr as revenge for Höðr's accidental murder of his half-brother, Baldr. He grew to full adulthood within one day of his birth, and slew Höðr...

, son of Odin, and that Snorri created the Váli, son of Loki, character to make sense of it.