The Dagda is considered the great god of Irish mythology. He is the chief god of the Tuatha Dé Danann, with the Dagda portrayed as a father-figure, king, and druid. He is associated with fertility, agriculture, manliness and strength, as well as magic, druidry and wisdom. He can control life and death, the weather and crops, as well as time and the seasons.

Irish mythology is the body of myths indigenous to the island of Ireland. It was originally passed down orally in the prehistoric era. In the early medieval era, some myths were transcribed by Christian monks, who heavily altered and Christianised the myths. Irish mythology is the best-preserved branch of Celtic mythology.