Ragnarok (FE2) the Norse end of the world. Gungnir (FE4) is named after Odin's spear. Thorhammer (FE4) Referring to the hammer in the hands of Thor , the Norse god of thunder. Tyrhung (FE4) also known as Tyrfing, a magic sword in Norse mythology. Yotsmungand (FE4/5) is an altered name for