The Giants-J

Hail!

So I'm moving onto the next one, which is J. Got my info from Wikipedia, which isn't a good source but they did a good job here.

J

Jarnsaxa

In Norse mythology, Járnsaxa (/jɑːrnˈsæksə/; Old Norse "iron-sax")^[1] is a jötunn. According to Snorri Sturluson's Prose Edda, she was Thor's lover. By him she was the mother of Magni. According to the Poetic Edda poem Hyndluljóð, Járnsaxa is the name of one of the Nine Mothers of Heimdallr.

Jarnvidr

 In Norse mythology, Járnviðr (Old Norse "Iron-wood"^[1]) is a forest located east of Midgard, inhabited by troll women who bore giantesses and giant wolves. Járnviðr is attested in the Poetic Edda, compiled in the 13th century from earlier traditional sources, and the Prose Edda, written in the 13th century by Snorri Sturluson.

Jormungandr

In Norse mythology, Jörmungandr (Old Norse: Jǫrmungandr, pronounced [ˈjɔrmuŋɡandr̥], meaning "huge monster"^[1]), often written as Jormungand, or Jörmungand and also known as the Midgard Serpent (Old Norse: Miðgarðsormr), or World Serpent, is a sea serpent, the middle child of the giantess Angrboða and Loki. According to the Prose Edda, Odin took Loki's three children by Angrboða—the wolf Fenrir, Hel, and Jörmungandr—and tossed Jörmungandr into the great ocean that encircles Midgard.^[2] The serpent grew so large that it was able to surround the earth and grasp its own tail.^[2] As a result, it received the name of the Midgard Serpent or World Serpent. When it releases its tail, Ragnarök will begin. Jörmungandr's arch-enemy is the thunder-god, Thor. It is an example of an ouroboros.