Merlin:

When Harry and his wife took the Hogwarts express train to school for the first time, Ron introduced Harry to the famous wizard-wizard exchange card attached to the chocolate frog. It mentioned Merlin. It is said that Merlin is a real historical figure.

Merlin is regarded as one of the cleverest wizards in history. As a great wizard, it is said that he was a consultant to King Votigan, Wu Seer and Arthur. Although he may be based on a real wizard, Merlin as we know him is a legend. For example, some people say that he arranged the stones of Stonehenge. Some people say that he has the ability to predict the future, because he has seen the future backwards.

People are most familiar with him as an adviser to King Arthur. It is worth noting that he hid Arthur when he was a child, just as we know that Dumbledore hid Harry from Voldemort. Tennyson, a poet, told the story in The King's Narrative Poems: As for the pain and sadness that plagued Arthur's mother long before he was born, he just came into this world and was sent to Merlin through a secret back door. He wants to leave with his children until luck changes and the dynasty changes. Because the ruler of that cruel day is as cruel as the tyrant today. If these animals knew the truth, they would surely cut the baby to pieces together. Many of them hate Wu Seer, and everyone is ambitious and wants to dominate, so Merlin takes the children away and gives them to Wu Seer's old friend Anton. Anton's wife took in the young prince and raised him with his own children; No one else knows about it. Those rulers are still fighting for power and profit like wild animals, killing each other, and the kingdom is about to perish.

Later, Merlin became Arthur's mentor. Merlin used his keen wisdom and vague wizard magic to help the young king against the enemies of Britain.

According to some legends, Merlin was deceived by his beloved witch Vivian and turned into a magical gas, which Vivian used to imprison him forever.