An old hermit who has been observing the events of the 'kung fu the legend continues' world from afar. He has vast knowledge of ancient martial arts secrets and decides to come out of his seclusion to guide the main characters. He could be a bit of a trickster too, making the characters work hard to earn his teachings.
A female warrior who is on a quest for revenge. She has her own set of moral codes which sometimes conflict with the main characters. She could be a very complex character, adding depth to the fanfiction. For example, she might be torn between her thirst for vengeance and the newfound friendships she develops with the 'kung fu the legend continues' crew.
Caine is definitely a popular character to feature. He's the main protagonist in the original series, and his skills and wisdom are great elements to explore in fanfic. Another popular one would be Peter, his son. There's a lot of potential in exploring their relationship further in fan - made stories. And then there's Kwai Chang Caine's master, whose teachings and influence on Caine can be delved into.
One idea could be a time - travel plot where a modern - day martial artist is transported back to the era of 'kung fu the legend continues'. They could use their new - fangled techniques and knowledge to either help or create chaos in that world.
One idea could be exploring a new villain in the 'kung fu the legend continues' universe. Maybe a powerful sorcerer who has a vendetta against the main characters. Another could be delving into the backstory of one of the minor characters and how they got involved in the kung fu world. And a third idea might be a time - travel plot where the characters go back to an ancient time to learn a new form of kung fu.
An air - nomad who was raised outside of the traditional air - nomad culture. This character could be struggling to find their place in the world and connect with their air - nomad heritage. They meet Korra and together they explore what it means to be an air - nomad in a modern world. They could also introduce Korra to some forgotten air - nomad traditions.
A new character could be a mortal who has somehow gained the ability to see through the Mist completely. This mortal is on a mission to expose the world of demigods and the gods themselves. Percy has to either convince this mortal to keep quiet or find a way to make them forget what they've seen, all while dealing with the chaos this person is causing in the demigod world.
Obviously, the main character would be the original character (OC) created for the fanfiction. Then, the Furious Five are great candidates. Tigress with her strong and serious nature could be an interesting part of the harem. Crane, with his gentle and intelligent side, would also fit well. Mantis, Viper, and Monkey each have their own unique personalities that could interact in different ways with the OC. And of course, Po, the Kung Fu Panda himself, could also be included, adding his fun - loving and food - loving nature to the mix.
A healer character could be added. This healer could be the one who discovers a hidden power within the apprentice that could change the course of their journey. Another potential character could be a mysterious traveler. This traveler has seen many different worlds and has knowledge that could either help or hinder the apprentice.
There might be a snow leopard with the ability to blend into the snow. This character could start as an enemy but later become an ally to Po.
A mysterious traveler passing through the town could be a new character. This person has seen many strange things in their travels and is not afraid of Edward. In fact, they see his potential and encourage him to leave the town and see the world.
A new character could be a therapist who has a unique approach to helping the main character. This therapist could introduce new ideas and methods of healing that the main character hasn't encountered before.