Váli
In Norse mythology, Váli (Old Norse: ) is a son of the god Odin and the giantess Rindr. Váli has numerous brothers including Thor, Baldr, and Víðarr. He was born for the sole purpose of avenging Baldr, and does this by killing Höðr, who was an unwitting participant, and binding Loki with the entrails of his son Narfi. Váli grew to full adulthood within one day of his birth, and slew Höðr before going on to Loki. He is prophesied to survive Ragnarök. Longstanding transcription error. Váli is referred to as the son of Loki, though this is argued by  some historians to be an early transcription error. The mistake arises from a single passage in "Gylfaginning" containing the phrase ""Then were taken Loki's sons, Váli and Nari"". However, "Gylfaginning" describes Váli as the son of "Odin" in two other instances. All other documents found that date from this time refer to Váli only as Odin's son, with the exception of more recent copies of the potentially mistaken text. Myths. The Váli myth is referred to in "Baldrs draumar": In "Völuspá": And in "Prose Edda" "Gylfaginning" (where he is described as Loki's son) The "Prose Edda" also  mentions him again. "Gylfaginning" contains this passage: The same text also states that he will survive Ragnarök, along with his brother Víðarr and the sons of Thor, Móði and Magni. Parentage. Early mistranslation or confusion has led to a single mention of a Váli who is a son of Loki: ""Þá váru teknir synir Loka, Váli ok Nari eða Narfi"" from the "Prose Edda", translated as "Then were taken Loki's sons, Váli and Nari". We find the original of the only reference to Váli as "the son of Loki", while even the same text refers to Baldr's death  being avenged by his brother (in "Völuspá" 33) as well as Váli being the Son of Odin in "Völuspá" 51, which is repeated in "Baldr's draumar". In the late period "Gesta Danorum" we also see that Odin is said to have a son with Rinda that will avenge his other son, Baldr's, death – though in this case the name of this new son is Boe rather than Váli. In all these tales Odin goes out immediately – either through seduction, deception, or force – to sire this son. Similarly where each of these documents ascribe Váli the role of Loki 's son we see only in the postscript or translation notes that this transformation was a punishment when in fact the gift of wolf's strength and rage is well attested as being granted by Odin to warriors known as "ulfhednar", which would make his son Váli a Berserker and a possible origin for the "ulfhednar" legend. Finally we see a different description in Hauksbók. In this version of "Völuspá", stanza 34 begins: ""Þá kná Vála | vígbǫnd snúa"", usually amended to the nominative "Váli" in order to provide a subject for the verb; Ursula Dronke translates it as "Then  did Váli | slaughter bonds twist" which presumably refers to Váli, son of Óðinn, who was begotten to avenge Baldr's death, and thus it is likely that he bound Loki, while it is highly improbable that it refers to a Váli, son of Loki, who is attested nowhere but one line of the "Prose Edda".