I'm not sure specifically as I haven't read it. But it could be the time - traveler who is at the center of the grandfather paradox situation, and perhaps their grandfather if he is a part of the past that is being interacted with.
Since it's about the grandfather paradox, there might be a protagonist who discovers time - travel technology or has some supernatural ability to go back in time. This character would be one of the main characters. There could also be other characters in the past, like the grandfather himself, and maybe some side characters in the present or future who are affected by the changes in the timeline caused by the protagonist's actions. For example, the protagonist's parents might be side characters whose existence is in jeopardy if the grandfather paradox plays out fully.
It's likely a visual novel that explores the grandfather paradox. Maybe it tells a story where a character goes back in time and tries to change something related to their grandfather, which could lead to all sorts of mind - boggling consequences and plot twists.
The main characters include The Flash, who sets off the events of the story through his time - traveling actions. Batman, who has his own unique story arc within this altered universe. And Aquaman, whose actions and decisions contribute to the overall chaos and conflict in the 'flashpoint paradox graphic novel'. There are also other characters like Wonder Woman, who are involved in the complex web of events and relationships in the story.
A different approach is self - correction. In some time travel paradox fictions, the universe has a way of self - correcting. So if you try to create a grandfather - paradox - like situation, some force in the universe will prevent you from doing so. It could be something as simple as events conspiring to stop you from making that final, paradox - creating action, like your gun jamming when you try to shoot your grandfather in the past.
The Grandfather is one of the main characters. He has a significant role in leading the Faction Paradox and making crucial decisions.
The 'paradox of gemini visual novel' could refer to the contradictions or unexpected situations often found in the plot, characters, or themes within the Gemini visual novel. Maybe it's about the duality of characters' personalities, or conflicting storylines that seem to oppose each other yet coexist in the narrative.
The central character is Artemis Fowl. He is a brilliant young boy with a lot of knowledge and a knack for getting into trouble. Then there are the fairy characters like Holly Short. She is a strong and resourceful fairy who often crosses paths with Artemis. Butler, Artemis's loyal bodyguard, also plays an important role. He is highly skilled in combat and protecting Artemis.
Maya Fey could also be a main character. Her spiritual powers and her relationship with Phoenix Wright can add depth to the story as they face the challenges brought about by the time paradoxes. And she often has a unique perspective that can help in solving the complex situations in the fanfic.
I have no specific information about the 'a3 visual novel' characters. However, in many visual novels, there are often diverse characters. There could be a young hero or heroine as the main character. Maybe there are some mysterious figures that are part of the 'a3' concept. They could be people with special abilities or knowledge that the main character has to interact with, either as allies or antagonists.
I don't have enough information to determine who the main characters in '707 visual novel' are. It could have a diverse cast of characters such as a brave hero, a cunning villain, and some interesting side characters.
Since I don't have specific information about this '999 visual novel', I can't tell you exactly who the main characters are. But usually in a visual novel, there are protagonists who drive the story forward, and there might be supporting characters like friends, family members, or antagonists who create conflict.