Maybe Ron is jealous of Harry and wants to have something that belongs to him for a change. The cloak gives Harry a certain freedom and mystery, and Ron might be longing for that kind of experience.
The cloak could change his life by making him more confident. If he's able to use it to his advantage, like sneaking into places he normally couldn't, he might gain a sense of power. For example, he could overhear important conversations that give him an edge in his studies or in dealing with bullies at Hogwarts.
It's possible that there are a group of friends in the 'Cloak of Courage Fanfic'. One of them discovers the cloak and they all get involved in the adventures that follow. Each friend could have their own unique personality and role in the story, for example, one could be the comic relief, another the strategist, and the one with the cloak is the brave leader.
I'm not entirely sure without more context, but usually there is a protagonist who owns the cloak. There might also be some characters who interact with the protagonist in relation to the cloak, like those who might envy it or try to take advantage of him because of it.
Since I don't know the specific 'cloak star story', it's hard to say. But it could be a young adventurer who discovers the cloak. There might also be a wise old mentor figure who knows about the cloak and the star.
I'm not sure specifically as I haven't read the 'Cloak of Darkness Novel'. But usually, in a novel with a cloak of darkness element, there could be a brave hero who has to face the unknown in the dark.
Obviously, Naruto is likely to be one of the main characters since it's about his Kyuubi cloak. He is the one who wields this power. Sasuke might also be a main character as he often has interactions with Naruto and his new power would surely affect their relationship. Sakura could be in there too, as she is part of Naruto's team and would be involved in any battles or events related to Naruto's use of the Kyuubi cloak.
The main characters in the 'Cloak and Dagger Graphic Novel' are Cloak and Dagger. Cloak is a rather mysterious figure. His power is tied to his cloak, which allows him to perform feats such as disappearing into the shadows and emerging in other locations. Dagger, in contrast, has a more positive - energy - based power. She can create daggers made of light. Their powers are complementary, and they are the central focus of the story. They face different challenges together and their relationship, whether it's a friendship or something more complex, is an important aspect of the graphic novel.
Since I don't know the exact 'green cloak school novel', I can't say for sure. But it could be students, like a curious boy or girl who is drawn to the mystery of the green cloak. Maybe a teacher who has some knowledge about it as well.
Perhaps the cloak is a family heirloom that the boy only discovers when he's in a time of great need. It could be a cloak that was enchanted by an ancestor with a specific purpose, like protecting the wearer from a particular dark magic. As he starts using the cloak, he realizes that it comes with a set of rules and responsibilities. He has to figure out how to use it to his advantage while also fulfilling whatever the cloak's original purpose was. This could lead to him learning more about his family's past and his own place in the wizarding world.