An old - fashioned Pokemon breeder who has a deep connection with the traditional ways of raising Pokemon. They could provide the main characters with valuable advice on how to make their Pokemon stronger and healthier. However, they might also be a bit stubborn about sticking to the old ways and this could cause some conflicts with the more modern - thinking characters in the fanfic.
An old and wise Pokemon sage. This character could live in a hidden forest and have knowledge about ancient Pokemon powers. They could play a role in either helping Pokemon Hunter J find redemption or in protecting the Pokemon from her. For example, they could give J some cryptic advice that makes her think twice about her actions.
A nomadic vampire with a completely different set of values compared to the Cullens. He could be more in tune with his animalistic side and not believe in the Cullens' way of trying to blend in with humans. His presence could cause conflict within the vampire community in Forks and also attract the attention of the werewolves.
One possibility is a young girl who has the ability to control light in a way different from Ruby's speed. She could be a street urchin who has been surviving on her own in the slums of a major city in Remnant. When she meets the RWBY team, she initially distrusts them but eventually becomes an important part of their group. Also, a grizzled old veteran of many battles against Grimm could be added. He could be a mentor figure, teaching the RWBY characters new combat techniques and sharing his wisdom about the history of Remnant and the Grimm.
You could add a young and inexperienced vault hunter who is eager to make a name for themselves. They might start off as a bit of a nuisance to the more experienced characters but gradually prove their worth. There could also be a mysterious merchant who is not what they seem. They might have a hidden agenda and be involved in some sort of illegal trading that could have a big impact on the Borderlands economy.
A mysterious old Pokemon trainer who has a lot of knowledge about ancient Pokemon moves. He could guide Rusty on his journey.
A young mage who has the power to communicate with all types of magical creatures, not just dragons. This mage could be a valuable ally or a source of trouble for the existing characters in the fanfic.
A young apprentice who has just started working in the chocolate factory. He is eager to learn from Willy Wonka but often makes mistakes that lead to humorous situations. For example, he accidentally mixes up the ingredients for a very important chocolate and creates a new, strange - tasting but oddly popular chocolate.
A scientist who is an expert on alien plants. He could be brought in to study the plant and try to find a way to control it.
There could also be a group of street - smart kids who befriend the Baudelaires. They have their own set of skills and stories, and together they can form a sort of alliance to protect their neighborhood from any potential threats. These new characters would bring in fresh perspectives and interactions for the existing characters in the fanfic.
One potential character could be a new sidekick for Batgirl Beyond. Maybe a young girl who idolizes Batgirl and has some unique skills like acrobatics or martial arts training. She could bring a fresh dynamic to the story and help Batgirl in her missions.