Merlin wore many hats: he was a wizard or sorcerer, a prophet, a bard, an adviser and a tutor. He appeared as a young boy with no father. He appeared as an old, wise man, freely giving his wisdom to four successive British kings. He was dotting old fool, who couldn't control his lust over beautiful women, who hold him in fear and contempt. He had even appeared as a madman after bloody battle, and had fled into the forest and learned how to talk to the animals, where he became known as the Wild Man of the Woods. Merlin was the last of the druid, the Celtic shaman, priest of nature, and keeper of knowledge, particularly of the arcane secrets.

Credit: given to Timeless Myths site