Lenore in 'The Raven' is the woman that the narrator deeply loved. She is dead, and her absence is what makes the narrator so melancholic. The whole poem is sort of centered around the narrator's mourning for Lenore, and the raven's presence seems to intensify his feelings about her loss.
We don't really know who Raven is just from 'Raven tells a story'. Raven could be an animal in a fable that has been given the power of speech to tell a moral - laden story. Or Raven could be a nickname for someone in a community who is renowned for their engaging storytelling skills.
The main theme of 'The Raven' is often considered to be grief and the inability to move on from loss. The narrator is mourning the loss of his beloved Lenore, and the raven's presence and its repeated word 'Nevermore' only deepen his sense of despair and hopelessness.
Raven could be a new character created specifically for this fanfiction. She might be a powerful witch from a distant magical land, with unique magical abilities like the power to communicate with magical creatures on a deeper level.
Raven could be an ancient and powerful witch who has been living in seclusion for centuries. She might have noticed Harry's special aura or his connection to powerful magic and decided to adopt him to pass on her knowledge.
Raven Roth may also be a character who has a mysterious past related to the dark arts. Maybe she was once involved with a group or a situation that had ties to Voldemort, but she has now turned against the dark side. Her knowledge of the dark arts, though dangerous, could be used to help Harry Potter understand his enemies better and find ways to defeat them. This complex backstory would make her a very interesting character in the fanfiction.
Often, there are other animals like the Eagle. The Eagle is usually portrayed as a noble and powerful character, sometimes in contrast to the Raven's more mischievous nature. There are also the Salmon, which are important as they represent a vital food source in the Northwest Indian culture. And the Bear can be another main character, often seen as strong and somewhat of a force to be reckoned with in the stories.