The god Loki (or Loke as we say in Sweden) from Norse mythology. My drawing is very inspired by John Bauer's paintings of him: en.wikipedia.org/wiki/File:Lok… . I don't remember when I first saw them, but I do remember that I thought: "Yeah, that's what Loki looks like".
Loki was the son of a giant (or jotunn. We say giant in Swedish, but the word is a bit misleading since many of them are of the same size as the gods), but he once mixed blood with Odin and became his foster brother (Odin's father was also a giant, btw). His role in the Norse mythology has been debated a great deal by scholars, among other things how much he may have been influenced by the Christian Devil (since those who wrote down the Norse myths were Christians). He is a bit of a trickster, sometimes assisting the gods and sometimes causing problems for them. He is described as cunning, unreliable and disrespectful, but there are many times when the gods were benefited by his tricks. It was thanks to him that Thor got his hammer, for instance.
By the giantess Angrboða, he was the father of Hel, the wolf Fenrir and the Midgard Serpent, but he is also said to have given birth to children himself. Once he became pregnant by eating a roasted woman's heart, but the most famous story is about how he turned himself into a mare, mated with the stallion Svaðilfari and later gave birth to the eight-legged horse Sleipnir. In the poem Lokasenna Odin also says that Loki once spent eight winters beneath the earth as a woman milking cows, and during that time bore children. But it's maybe just said as an insult.
In Ragnarök Loki will fight against the gods and be killed by the god Heimdall.