I'm not sure as the 'flow of time story' isn't fully defined. But it could be a character named Tim who is constantly struggling against the flow of time, trying to hold on to the past. Or it could be a group of friends who experience different stages of life together as time moves forward.
The central character is DJay, a Memphis pimp - turned - rapper wannabe. Then there's Key, who has skills in music production and is an important part of DJay's journey. Also, there are other characters in DJay's life, like the women who are part of his world as a pimp, and they also play a role in his transformation as he tries to leave that life behind and focus on rap.
Finn, a brave and curious human, and Jake, his magical dog buddy, are central to Adventure Time main story. Princess Bubblegum is another important character. She's intelligent and has to deal with the governance of the Candy Kingdom. The Ice King, with his ice powers and his obsession with kidnapping princesses, is also a key figure. There's also Marceline the Vampire Queen, who has her own unique personality and backstory that ties into the main story in various ways.
Since I haven't read the 'the story of time novel', it's hard to say who the main characters are. However, they might be characters who are on a quest related to time. For example, they could be searching for a way to reverse time, or to understand the true nature of time, and their journey forms the core of the story.
As I haven't read the 'no time for fear story', it's impossible for me to determine the main characters. It could be ordinary people put in extraordinary circumstances, or it could be some kind of heroic figures. But without reading it, it's just speculation.
The main characters are the parents and their two children. The parents are the ones who are initially in control of the house with all its technology. The children are the ones who get too attached to the virtual veldt in the nursery.
The main characters might include parents as well. In a Pajama Time Story, parents could be involved in tucking the children in, reading them a story, or just having a gentle conversation with them during pajama time. Also, pets can be main characters. A little puppy or kitten that curls up with the child during pajama time could be part of the story.
Since we don't know the specific 'time and darkness story', it's hard to say. But it could be Time and Darkness themselves as the main characters. They might be personified entities with their own personalities and motives.
The main characters are Jake Brigance, the lawyer who defends the girl's father. The girl's father himself is a key character as his act of vengeance leads to the trial. And the young girl who was raped is also an important character, though more in the context of the events that set the story in motion.
The key characters in the 'No Time to Die' story include James Bond, of course. He is the hero we all know. Madeleine is a crucial character. She is not just a love interest but also a key part of the mystery. The villain Safin is a very interesting character. He is menacing and has a dark backstory. There are other characters too, like Q who provides Bond with his gadgets. M also plays a role in guiding Bond's actions in the story. Each of these characters contributes to the overall plot and the high - stakes adventure.
In some versions of 'a stitch in time story', there might be a craftsman as one of the main characters. He notices a small flaw in his work, say a tiny crack in a pot he is making. And then there could be his master or an old experienced colleague who emphasizes the importance of fixing it immediately. So the main characters are usually someone facing a small issue and someone guiding them to solve it promptly.