The Jotnar in Norse mythology are a tricky bunch. Are they bad guys? Are they good guys? Jötnar, commonly known as Giants, are the most ancient race who emerged from Ginnungagap. They are native to Jötunheim, Muspelheim and Niflheim, but are also known to inhabit other realms and lands. They have long been at war with the Aesir. Environment: forest, high mountain.