Helgi Haddingjaskati (Old Norse: [ˈhelɡe ˈhɑdːeŋɡjɑˌskɑte], meaning "Helgi the lord of the Haddingjar"[1]) was a legendary Norse hero of whom only fragmentary accounts survive.
It is said in the end section of Helgakviða Hundingsbana II, a poem of the Poetic Edda, that the hero Helgi Hundingsbane and his lover Sigrún were reincarnated as Helgi Haddingjaskati and the valkyrie Kára, Halfdan's daughter, who were the protagonists of the Káruljóð.
[2] Káruljóð is lost, but a part of the adventures of Helgi and Kára are held to survive in the legendary saga Hrómundar saga Gripssonar.
[3][4] In this legend, Helgi Haddingjaskati is the champion of two Swedish kings named Haldingr.
A last fragmentary reference to a skati Haddingja, a "ruler of the Haddings", appears in Kálfsvísa, a part of Snorri Sturluson's Skáldskaparmál: