Hera was a goddess of the Ancient Greek pantheon. She was the wife and older sister of Zeus. Her chief function was as goddess of women and marriage. The Romans conflated Hera with their own Queen of the gods Juno.
Hera was known for her jealous and vengeful nature, most notably against Zeus's paramours and offspring, but also against mortals who crossed her.
Juno lived in the Italian city of Veii prior to 396 BC, when the Roman Republic conquered the city and moved the center of her worship to Rome. This case was one of the legal precedents of resettled Powers which David Fisher often consulted in his work.
Hera and Zeus tasked Andromeda with vanquishing the Gorgons, three creatures of entrancing beauty. Zeus indicated his willingness to vanquish them himself, but Hera refused to allow him, knowing he would be too easily entrapped by the Gorgons' beauty.
Hera presented Andromeda with a shield that would distort the reflection of whoever gazed into it to aid her in her task.
Some time prior to this, Zeus had had an affair with a mortal princess, Danaë of Argos, which resulted in a son named Perseus. Andromeda rescued Perseus from a sea monster and married him on Mount Olympus. Hera found that she actually liked Danaë, as the two bonded over their irritation with Zeus.