Ever did some side quests in a game or had a DM sent you to a small dungeon crawl or filler adventure?
This is the vibe I am going for. A scenario where characters, for one reason or another, decided to travel together for a while, face challenges and develop whichever kind of relationship fits them. All that set in a classical medium to high fantasy world with different races, monsters, mages and so on.
The main roles I have at hand fitting to this are a young man who is a very renowned tracker and plant expert. He spends most of his life outside of cities and villages, expect for very harsh winters or the odd times when he decides to sell some goods, repair his equipment or to look around for a mission. In some cities he is also renowned as a follower of the god of travel and whenever he has time will try to entice people to go out and see the world - much to the disliking to some nobles, which makes it more entertaining for him regarding his hatred for that class.
As a contrary to this I have a female alchemist who just finished her apprenticeship and went out to see the world. She is most versed in the creation of poison and some other potentially harming substances but has learned to create many marvelous things during her apprenticeship. She furthermore learned a lot about etiquette and social interactions as she grew up in a big city. For the same reason she is very well versed in staying unseen if she needs to, combined with her skill in climbing this helps her to get to places she was never supposed to go. For very apparent reasons she normally does not tell these things to strangers, to them she is just a traveling alchemist.

If you would meet Noemi in the street you would definitely and immediatly be sure that she is many things but nowhere near to being normal. The first thing most people notice is the bright teal strand in her otherwise brown hair. It does not get any more common when coming nearer, she usually does her best to differ from the people around her. Her most beloved earrings are created from resistors, her wrist band is made of multiple colorfoul stranded wires and closes through by clicking a male into a female connector, more often than not she will be wearing a shirt with a painfully nerdy juke or a dress printed to resemble circuit board wiring or something familiar. People easily guess that she must have a relationship to computers.
They're not wrong, they just underestimate things. The young woman is what people call a technopath. Somebody able to manipulate technology by sheer will power alone. An ability enabling opening many possibilities for her, especially in the age of digitization. Sure, it comes at a prize e.g. including the fact that silence is something she nearly never experiences. But it is so amazingly potent!
Well that was also what the people who took her in when she was just a child and trained her thought. They were right. She was very helpful to the organization and for a few years everything went smoothly. But at one point Noemi started questioning things and ideologies and she was lucky enough to do this in silence. And after a while she decided that the answers she found were not very... agreeable. Next thing the organization knew is a rather big breach resulting in some chaos and her parting from them.

The story itself is somewhat flexible and open for a plot. It can be integrated in a world like X-Men where powers exist. It was once created as a world where most people are normal, only some of them are born with special abilities and only some of those are ever trained in using them such that they end up in control over their powers. Governments and a few private organizations are the only ones knowing and do the best to keep things that way.
Some plot building beforehand would still be required. I have a few vague ideas, but as Noemi is mostly a very helpful young woman and can fit in many scenarios I would also look forward to somebody else's ideas!

Keira has grown up to know... everything. Her father was a hunter, met her mother during work when both were following the same something and a few years later she was born. After that most of the time either her mother or her father would stay with her - a baby is not really helpful during a hunt - or her grandmother would take care. When her mother died, surprisingly of natural causes, her grandmother was there more often such that her father did not need to take her with him. As she had just entered kindergarten this was probably for good.
He still trained her as soon as it seemed sensible, so besides going to school she started to learn about the supernatural, fire weapons, fighting, materials and how to get information from people without getting in trouble or being put into a nuthouse.
As she grew older her father took her on trips with him. Short trips. He never liked the fact that his daughter wanted to go with him. He knew full well that she wasn't completely healthy and although she knew how to take care of herself the risk seemed to high for him. But what would you do against a teenager? Apparently at least some of the words uttered when she traveled with him reached her, as her urge to go hunting subsided a little bit with time.
This did not mean she didn't want to be part of the fun. She just understood that she was fully able to do some things, but others were to be left to other people. There were still so many things to do. Bit by bit, first besides school and later on during university, she read and learned and created libraries and catalogs of information, databases of clues. Keira learned how to set up fake email addresses and phone numbers, how to forge information and papers and how to use all this to support hunters. At first it was just her father but slowly people asked him or her if she could help them and entered her network.
By the time she finished university she had grown into a source of information and support for a medium network of hunters and such. She helped out whenever somebody called, she created the illusion of being an authority figure or whatever was needed if someone needed to confirm his "background" and from time to time she took her own odd jobs. And she stayed on the look for signs that something was going on that somebody needed to investigate. This was mostly her father, but as he recently passed away she has started to just call people on her lists - what else is she supposed to do?

The setting is supposed to be placed into the same world as the show, but probably before the main time line or maybe early episodes. I don't care all too much if it is in America or Europe, both could work out well. To start things off I would have a scenario in her home town which she would not be wanting to take on alone, therefor searching through her contacts for someone who could help.