فافنیر

thumb|A depiction of Sigurð slaying Fáfnir on the right portal plank from Hylestad Stave Church, the so-called "Hylestad I", from the second half of the 12th century In Germanic heroic legend and folklore, Fáfnir was a dwarf or other type of humanoid who had shifted into the hamr of a Germanic dragon (a worm, "serpent", in period nomenclature) in order to protect a treasure, eventually being slain by a member of the Völsung family, typically Sigurð.