Midir is a character from Irish mythology, specifically known as a member of the Tuatha Dé Danann, a group of supernatural beings. He is often depicted as a god of the underworld and is associated with magic and the otherworld. Midir is best known for his role in the tale of Étain, where he falls in love with her and faces challenges due to her previous marriage. In the story, Midir's love for Étain leads to conflict with her husband, Eochaid, resulting in a series of events that highlight themes of love, jealousy, and transformation. Midir's character embodies the complexities of desire and the consequences of divine intervention in human affairs.