One great 'Merlin Series Five fanfiction' is 'The Lost Prophecy'. It continues the story after the events of series five, exploring Merlin's further adventures in a very engaging way. Another interesting one could be 'Merlin's New Beginnings' which focuses on how Merlin rebuilds Camelot in a different light.
Well, 'A Different Ending for Merlin Series Five' is quite popular. It takes the characters from series five and gives them a completely different fate. For example, it changes the way Arthur and Merlin's relationship develops at the end. There's also 'Merlin's Hidden Powers in Series Five' which delves into the powers Merlin might have that were not fully explored in the actual series.
In the world of 'Merlin Series Five fanfiction', 'The Reunion' stands out. It's about Merlin and Arthur reuniting in a magical way after Arthur's death in the series. The author does a great job of building on the emotions and the magic that was established in the show. Also, 'Merlin's Allies in Series Five' is a story that focuses on the other characters who support Merlin during the events of series five, showing a different side of the story.
Well, there are fanfictions that focus on the aftermath of the events in Merlin Series 6. Some might depict how the people of Camelot adjust to a new era without Arthur. Maybe Merlin tries to use his magic more openly to guide Camelot in a positive direction. Also, there could be fanfictions where the side characters get more development. For instance, Gwaine's backstory could be explored further in relation to the events of Series 6.
You can start by looking on fanfiction websites like Archive of Our Own (AO3). It has a large collection of 'Merlin Series Five fanfiction'. Another place could be FanFiction.net, which also has a wide range of stories related to it.
There's also 'Merlin's Hidden Power'. In this story, Merlin discovers a long - lost power within himself while still remaining loyal to Arthur. The fanfiction focuses on how their bond grows even stronger as they face political intrigue in Camelot. It has a lot of action scenes and emotional moments between the two characters.
One great Merlin Arthur fanfiction could be 'The Bond Beyond Magic'. It focuses on their relationship growing stronger as they face new magical threats together. Another is 'Arthur's Discovery' where Arthur slowly uncovers Merlin's true power and the depth of his loyalty.
One popular one could be 'The Prince Merlin's Destiny'. It often features Merlin coming to terms with his new princely status and the political intrigue that comes with it. Another might be 'Merlin: The Hidden Prince' which focuses on Merlin's journey of discovery about his royal heritage and how it affects his relationships in Camelot.
One great Merlin mermaid fanfiction is 'The Mermaid's Gift'. In this story, Merlin discovers a mermaid in a hidden cove. The mermaid has special powers that she uses to help Merlin protect Camelot from a new threat. It's a really interesting take on the Merlin universe combined with mermaid lore.
One good 'Merlin exhausted' fanfiction could be 'Merlin's Tiring Day' where Merlin has to deal with multiple magical threats in one day and is completely worn out by the end. It shows his struggle and how he overcomes it despite his exhaustion.
One great 'Merlin lost fanfiction' could be those that explore what would have happened if Merlin had revealed his magic earlier. For example, a story might show how Arthur would have reacted and how it could have changed the whole dynamic of Camelot.
One great Merlin Balinor fanfiction could be 'The Legacy of Balinor'. It delves into how Merlin discovers more about Balinor's past and uses that knowledge to face new threats in Camelot. Another might be 'Balinor's Spirit', which focuses on Merlin's interactions with the spirit of Balinor and how it guides him in his magical journey.
One great Merlin childhood fanfiction is 'The Young Merlin's Adventures'. It focuses on Merlin's early days in Camelot, his struggles with his magic, and his budding friendships. It has a lot of heartwarming moments and shows how Merlin was coming into his own power as a child.