I'm not sure who the main characters are without reading it. But they are probably witches or wizards.
Since it's a 'witch and wizard graphic novel', the main characters could be a young witch and wizard who are just starting to discover their powers. They might be siblings or friends. They could be on a journey to learn more about their magic and the world they live in. Maybe there is an old and wise wizard who serves as their mentor, guiding them through the challenges they face.
The 'witch and wizard graphic novel' probably tells the story of witches and wizards in a visual format. It could include elements such as their unique powers, the magical world they live in, and the challenges they face. For example, they might have to fight against an evil wizard who wants to take over their magical realm. There could also be a story of a young witch or wizard coming of age and learning to control their powers.
The main characters are Dorothy, who is the protagonist. Then there's the Scarecrow, Tin Man, and Cowardly Lion. Also, the Wizard of Oz is an important character.
The main characters are Dorothy, a young girl from Kansas. Then there's the Scarecrow who lacks a brain, the Tin Man who wants a heart, and the Cowardly Lion seeking courage. And of course, the Wizard of Oz himself.
The main character is Ged. There are also other wizards and magical creatures that play important roles.
The main character is likely the witch boy himself. There might also be other witches in his family or community, like an older female witch who could be a mentor or a strict aunt - like figure who enforces the rules of the witch world.
Since it's a 'night witch' graphic novel, the main character is surely the night witch. Maybe there is a love interest, a human or another magical creature that she has a relationship with. And perhaps there is an antagonist, like an evil wizard or a demon who tries to thwart her plans.
I don't know the specific main characters without more information. It could be the witch doctor themselves, of course.
In the 'Akata Witch' graphic novel, the central character is the Akata witch. She is the one whose story we follow. Besides her, there may be a cast of characters. There could be a wise old wizard or witch who serves as her mentor, guiding her through the world of magic. There may also be her peers, other young witches or magic - inclined individuals, with whom she forms friendships or rivalries. These characters together create the complex web of relationships and interactions that drive the plot forward.
Since I haven't read it, I can't say for sure. But it might have the basic witch herself as the main character. There could also be her familiar, like a black cat or an owl.
The main character is the witch boy himself. He is the one who defies the norms. There are also likely his family members, such as his parents who may initially oppose his interest in witchcraft as it goes against the family and community traditions. And there could be other kids in the community who either support or oppose him.