Regin

Sigurd killing Regin in an engraving from the Hylestad Stave Church
The decapitated Regin in the Ramsund carving

In Norse mythology, Reginn (Old Norse: ᚱᛁᚼᛁᚾ[1]/ᚱᛁᚽᛁᚿ[2] [ˈreɣenː]; often anglicized as Regin or Regan) is a son of Hreiðmarr and the foster father of Sigurð. His brothers are Fáfnir and Ótr.