One idea could be exploring a new character who discovers a hidden power within the rings that was previously unknown. This could lead to a whole new adventure and conflict within the fanfiction world.
Give the character real - life - like flaws. A character who is too perfect isn't believable. So, if your character is a powerful ring - bearer, they could have a fear of heights which is a hindrance in some situations. Also, let their actions be consistent with their personality. If they are a kind - hearted person, they won't suddenly start acting cruel without a good reason, especially when it comes to using the power of the rings.
Sauron is a main character. He is the main antagonist, desiring power through the Rings of Power. Galadriel is also important. She is an elven leader with great wisdom. Elrond is another main character, known for his knowledge and his role in the events related to the rings.
Since I don't know the exact 'adar love story', if it's a common one, the main characters would be Adar and perhaps their love interest. It could be another person named something like Leila if it's a boy - girl love story.
The back story of 'Rings of Power' is set in Middle - earth long before the events of 'The Lord of the Rings'. It delves into the forging of the Rings of Power, which were created by the Elven - smiths with the guidance of Sauron, who was initially disguised. The story shows how different races in Middle - earth, like the Elves, Dwarves, and Men, became involved in the events related to these powerful rings. This led to the rise of Sauron's power and the long - standing conflicts that would shape the future of Middle - earth.
A really interesting 'rings of power fanfic' could be 'Galadriel's Quest'. In this fic, the author delves deeper into Galadriel's character, her motives and her journey in a way that the original might not have fully explored. It's full of vivid descriptions and emotional moments that make it a great read. For example, the way the author describes Galadriel's internal struggles when faced with difficult decisions is both captivating and thought - provoking.
Yes, it can be considered fan fiction. It takes elements from J.R.R. Tolkien's works and expands on them in a way that some view as more in the realm of fan - created content. It has a lot of creative liberties that deviate from the original lore in ways that make it seem like fan fiction.