Loki, though mischievous and often unrestrained in jokes, he was held in high esteem by the gods. His cleverness and abilities benefited the Asom many times, and more than once saved them in their adventures, in which neither strength, neither mind was of any use. Odin, accepting him among the gods, he was counting on it, that he would abandon the habits of the giants and become like the Aesir. He also looked at love with joy, connecting Sygin and Loki, because he expected, that only love can tame this god's antics. Indeed, he had seen evil deeds and profane acts, which he did in the absence of his wife, but he put it down to excessive male indulgences. After all, he was not always faithful to Frigg himself. Nevertheless, he closely followed Loki's activities in Midgard and Jótunheim, keeping watchful, that some misfortune would not come out of them.
Once he saw Odin from the highlands of Hlidskjalf, how Loki practiced hideous witchcraft. He ate the half-charred heart of the woman, who died in a fire and aided by the witch's spells, got pregnant. All the freaks in the world come from this offspring.
Another time, he saw Loki, having fun with the scary, the many-headed giant Angrboda. Odin was frightened, feeling, that destiny directs this relationship. But there was nothing he could do about it. The more urgently he looked at the Iron Forest, where Angrbody was based.
After a while, three monstrous children were born there. One was born into the world already grown up. It was half a woman's body, half-decaying corpse. It was called Hel. As the second, she gave Angrboda the serpent Midgardsorm. Immediately after birth, it began to grow and quickly took on terrifying dimensions.