Since I don't know the details of this 'ghost kanan story', I can't say for sure who the main characters are. But surely, Kanan, the ghost, is likely to be one of the main characters.
I'm not sure specifically which 'ghost kanan story' you are referring to. There could be many fictional stories with such a name. It might be a unique story created by an individual, a local legend, or something within a specific cultural or literary context.
There could be characters like Hera Syndulla. She is often associated with Kanan and might play an important role in the graphic novel. Maybe Ezra Bridger could also be in it as he has a connection to Kanan in the Star Wars lore.
The show 'Raising Kanan' is a prequel to 'Power'. It tells the story of Kanan Stark's early life in the 1990s. It shows his upbringing in South Jamaica, Queens, and how he got involved in the drug trade. His mother Raquel is a major influence in his life, trying to protect him while also being involved in some shady activities herself.
In 'Star Wars Rebels', Kanan's story is quite interesting. He was a Padawan when the Jedi Purge happened. Throughout the series, he not only trains Ezra but also forms a strong bond with the rest of the rebel crew. His journey includes rediscovering his Jedi identity and using his skills to fight the oppressive Galactic Empire. He also has a complex relationship with Hera, which adds depth to his character.
Raising Kanan is not a factual account about 50 Cent. It's a creation for entertainment purposes, but it could incorporate certain themes or situations that are relatable in a broader sense.