Talk:Gemini Nikana Sheath/@comment-211.171.21.136-20150402085212

Ymir is the primeval being in Norse mythology(yes the one where odin and thor appear), ancester of all jotuns(aka giants), born of drops of elements, fell by odin, vili, and ve

Surt is probably short for Surtr(also spelled Surtur), the flame jotun in the same myth(not the same story though).

He wields a giant flaming sword.

During ragnarok he battles with the aesir(the gods), majorly with freyr, and his flames engulf the earth