Kilgharrah is among the show's most powerful beings. He is resistant to most forms of magic, even Merlin's, and has the might of a thousand men. His attack on Camelot would've been lethal had Merlin not intervened, and even then, the young warlock prevailed because of his dragonlord abilities.
Some argue him to be the most powerful wizard of all time. He had a huge impact on the muggle world, assisting King Arthur and the Knights of the Round Table in addition to setting up many organizations that existed long after his death. After all, there would be no "Order of Merlin" title without the prolific wizard.
Merlin is also extremely powerful like Morgana however he doesn't practice too much dark magic. Overall, Merlin would win but Morgana would've been a close second if she realised Merlin was Emrys sooner.
What is kind of interesting is that he retains the demonic powers of his father even despite renouncing them. And on renouncing the demons, he is also given powers from God: his ability to see the future comes from God. So, Merlin ends up with powers from both demons and from God.
The Story of Merlin (The Most Powerful Wizard) - Harry Potter Explained
What is Merlin's highest power level?
Merlin's power level has been the center of controversy since the start. It was recorded to be around 4,710. Later on, in the battle of Camelot, she easily overpowers Chandler and Cusack, which would put her power level well over 173,000.
Mordred as a young boy keeps calling Merlin "Emrys", which is actually Merlin's name as a Celtic druid and sorcerer. In Welsh, Merlin's full real name is actually Myrddin Wynn Emrys. Myrddin is his first name, Wynn is his family name and Emrys is his druid name.
"As soon as Arthur knows that Merlin has magic, we felt the format of the show was over," Capps explains. "Because the format of the show was that he had to hide it. It's the end of the story – or the end of this version of the story."
Merlin was a great and powerful wizard who lived centuries before our story takes place. He studied at Hogwarts and was a Slytherin. JKR got his name from Merlin, the wizard-advisor of King Arthur. In fact, we Potterheads like to think that our Merlin was King Arthur's advisor.
Merlin is the most powerful wizard recorded in the history of the wizarding world, even more so than Albus Dumbledore and definitely more powerful than Lord Voldemort. Merlin was intelligent and talented, and during his time at Hogwarts, he managed to decipher many of the secrets of the castle.
It might seem a bit unthinkable to place Disney's version of Merlin above someone like Gandalf, but he is "the world's most powerful wizard." Merlin isn't just blowing smoke when he makes that claim either, for his power isn't driven by something as simple as a wand alone, but rather his own eccentric will.
Merlin's power of Infinity is a unique and incredibly powerful ability that allows her to keep her spells active until she herself chooses to dispel them. That said, it is very likely that any magical effect she incites will live on, even after Merlin herself dies, should she fail to undo it at that point.
A popular version from the French prose cycles tells of Merlin being bewitched and forever sealed up or killed by his student, the Lady of the Lake, after falling in love with her. Other texts variously describe his retirement, at times supernatural, or death.
During one of their lessons, Arthur is transformed into a sparrow and attacked by a hawk and accidentally meets Madam Mim, a witch representing the Merlin's nemesis: her trickery opposes Mer- lin's scientific skills. To save Arthur, Merlin intervenes by challenging Madam Mim.
It was from these two influences that the character of Merlin received the official name of Merlin Ambrosius (or Myrddin Emrys). The original character of Merlin became popular within Wales, especially during the medieval period, with later writers expanding his backstory and personality.
Why was the TV series Merlin canceled? They always planned it the way it was. It wasn't canceled it just ended. The writers always said they only ever planned for five seasons.
Unbeknownst to him, Lenore had kept the sword hidden from him but told him that it had been destroyed. After the sword was removed from his body, Merlin lost his magic, though he tried to keep that hidden from others in order to keep up the appearance that he is still very powerful.
Arthur was unaware of Merlin's powers until the very last episode of season 5 ("The Diamond of the Day: Part 2). In one of Merlin and Arthur's best moments, both men share a beautiful but bittersweet conversation as Arthur's discovered everything Merlin had done and sacrificed for him.
Merlin is in love with the Lady of the Lake despite his age, and every time she comes he promises to teach her magic in exchange for her love. Every time this happens, she binds him in the tree by using magical thread which the Norns had at one time taught her how to spin.
Avalon: In some versions of the legend, it is said that after King Arthur's death, he was taken to the mystical island of Avalon to be healed or to await his eventual return.
Old Merlin, otherwise known as Emrys, is Merlin's alter ego. The young warlock uses an aging spell to transform himself into an old man and must take a potion to transform back to his young self. Gaius is the only one to know Old Merlin's true identity.
Gwen started to have feelings for Merlin but Merlin didn't notice of that even when she kissed him once, as they were in the same level in the Kingdom as the servants of Prince Arthur & Lady Moragana they were very friends and close.
He moved objects to make them obstacles and tripped Arthur with a length of rope, then seized Arthur's mace and began to taunt him. However, Merlin became distracted by Gaius, who had been watching the fight, and Arthur defeated him by attacking him from behind with a broom.
