I have no idea. Maybe you can look it up in a library or on a dedicated graphic novel website that provides author details for various works.
It depends. If you're referring to a specific title called 'Sisters', it might or might not be a graphic novel. You need to provide more context.
Since I haven't read it, I can't say for sure. But I assume the two sisters are the main characters.
Obviously, the sisters are the main characters. But without more information, we can't say much about their personalities or what they do exactly.
Since it's called 'Sisters the Graphic Novel', the main characters are probably sisters. Maybe one sister is the more adventurous type, always getting into new things, and the other is more cautious. They would be the central focus of the story, and the plot would revolve around their interactions and experiences.
It's possible that in addition to the sisters, there are other characters like a wise old neighbor who gives them advice, or a school bully who causes trouble for them. But at the heart of it, the sisters are likely to be the central focus. They might be characters with distinct looks and personalities. One could be a tomboy and the other more girly, and these traits would influence their actions and how they interact with the other characters in the graphic novel.
Since I haven't read it, I can't say for sure. But it's likely the sisters themselves are the main characters.
I don't know who the author of the '499 graphic novel' is. There are so many graphic novel authors out there and without more context or research, it's impossible to determine.
As I don't have the actual 'little sisters graphic novel' in front of me, I can't say for sure. But most likely, the little sisters themselves would be main characters.
I don't know who the author of 'the darkling graphic novel' is. You could try looking it up in a library database or on a book - selling website.
I don't know who the author of 'Katusha Graphic Novel' is. You could try looking it up in a library database or on a specialized graphic novel website.