The main character is, of course, the Black Panther. But there may also be other important characters like his family members, perhaps his father or mother who might have played a role in his upbringing. Also, his allies within Wakanda could be main characters, like the Dora Milaje.
The 'Rise of the Black Panther Graphic Novel' is important because it can expand the lore. It may show how the Black Panther came to be, his early challenges, and how he developed into the iconic character we know. This not only enriches the story for long - time fans but also attracts new readers to the Black Panther universe.
The Black Panther comic has its own unique fictional universe and narrative that is not related to the Black Panther Group. The comic's creation was based on comic book concepts and storytelling rather than any direct connection to the group.
One great 'Black Panther' fanfiction is 'The New Wakanda' which explores a Wakanda that has to face a new, unseen threat. It has great character development for T'Challa and his sister Shuri.
The Legend of Black Panther is an audio novel that can be listened to for free. However, the search results did not provide clear information on which platform could be listened to for free. Therefore, I don't know the specific platform for free listening to books.
It's very important as it gives the backstory. It shows how the Black Panther character and the Wakandan nation came to be. It sets the foundation for the character's values, powers, and the unique culture of Wakanda.