Since I haven't read the 'book of altered reality fanfic', I can't say for sure who the main characters are. However, it's common in such stories for there to be a protagonist who is the one most affected by the altered reality. There might also be some sort of guide or mentor character who helps the protagonist understand what's going on. And perhaps there are antagonists who either caused the alteration of reality or are trying to take advantage of the chaos it has created.
Well, without having read the 'book of altered reality fanfic', it's hard to say exactly. However, it might be a story that plays with the concept of reality in an interesting way. It could be that different dimensions or parallel universes are involved, where the rules of reality are different in each one. The fanfic could be centered around a group of characters who are somehow transported between these altered realities. They might have to face different challenges in each reality, like different forms of danger or different moral dilemmas. This would make for an exciting and thought - provoking story.
Maybe there is an experienced virtual reality engineer. This character could be crucial as they understand the inner workings of the virtual world. They might be the one who has to fix problems when things go wrong, like when the virtual world starts to blend with the real world in unexpected ways.
The main character is Takeshi Kovacs. He's a tough and resourceful individual. His character is shaped by his past experiences in different bodies and his struggle to find meaning in a world where life and death are no longer as straightforward as they used to be. Kristin Ortega is also significant. She has her own set of beliefs and values, and her relationship with Kovacs is complex. It's a mix of attraction, distrust, and mutual need as they both try to solve different mysteries and face threats in their world. And then there are the villains, like Laurens Bancroft, a wealthy and powerful man who has his own hidden agendas.
Sasuke could also be a main character in such a fanfic. His thirst for power and revenge might lead him to either seek reality manipulation powers or oppose those who have them. His complex personality would make for some great plot developments in relation to this power.
It could be an alternate version of Orochimaru. In the altered dimension, he might have achieved even greater power and is now bent on ruling over all the dimensions. His experiments could have led to the creation of new and terrifying creatures that Naruto has to face.
One of the main characters in 'Altered Carbon' is Takeshi Kovacs. He is a complex figure. He has been through numerous resleevings (transferring consciousness to different bodies), which has given him a jaded yet resilient outlook. His past experiences as an Envoy, a special military unit, shape his skills and his moral code. He's a fighter, both physically and in terms of his will. Another important character is Laurens Bancroft. He is a wealthy Meth (a term for the long - lived and powerful elite in the story's world). Bancroft's death and subsequent revival through resleeving is what kicks off much of the mystery and action in the novel. His character represents the power and corruption that exists within the upper echelons of this future society.
I don't know for sure as I haven't read it. But it could be characters from the original book series that Book 3 belongs to. Maybe the hero who has to face the challenges related to fire.
One of the most interesting characters is Kovacs, for sure. He's a warrior - type character who has seen a lot of action and death. His internal struggle with his past actions and his new - found opportunities in different bodies is engaging. Also, Sleeve, the term for the bodies in the story, add an interesting layer. Each Sleeve has its own characteristics, and the way characters interact with different Sleeves is quite fascinating. For example, when Kovacs is in a new Sleeve, he has to adapt not only to the body but also to the life and relationships associated with it.
Since I don't know the specific 'reclaim reality visual novel', I can't say for sure. But typically in a visual novel, there could be a protagonist who is on the journey to reclaim reality. There might also be a guide or mentor character to help them along the way, and perhaps an antagonist who is trying to prevent the protagonist from achieving their goal of reclaiming reality.
Since it's a fanfic, the main characters could be a mix of the original characters from 'Coco' like Miguel and his family, and those from 'The Book of Life' such as Manolo. However, the author of the fanfic might also create new characters to drive the story forward.