Another theme is jealousy. His possessiveness can lead to jealousy when others interact with what he considers his. For example, if another Lost Boy gets too close to the person he's possessive about. In some fanfictions, this jealousy can lead to some really tense situations.
One common theme is the power struggle. Since Peter Pan is possessive, there's often a struggle between his will to keep someone or something close and the will of that person or thing to be free.
In OUAT (Once Upon a Time) fanfiction, a possessive Peter Pan can add a lot of drama. He is often portrayed as a complex character. His possessiveness might stem from his eternal youth and his fear of losing what he considers 'his', like Neverland or certain characters. It can create intense relationships with other characters in the fanfic world.
A common theme is loyalty. Tony's possessiveness often stems from his loyalty to Peter, and vice versa. They are there for each other through thick and thin.
A third theme is self - discovery. Peter often has to figure out how he feels about Tony's possessiveness. Does he welcome it as a sign of love and care? Or does he feel stifled by it? This internal struggle within Peter about Tony's possessive nature is a common theme in these types of fanfictions.
He's often shown as very controlling. For instance, he might control the Lost Boys strictly because of his possessive nature. He sees them as his and wants to keep them in Neverland.
A common theme is the exploration of different worlds. Since Peter is from Neverland and Ariel from the underwater world, fanfictions often focus on how they interact with each other's habitats.
The theme of adaptation is very common. Peter Pan has to adapt to living with a partner, sharing his space, and making decisions together. Also, the theme of love against all odds can be seen. Given Peter's wild and free nature, it seems unlikely for him to settle down, so when he does get married in fanfiction, it's often about a love that is so strong it overcomes his natural instincts. In addition, some fanfictions explore how his marriage affects the other characters in Neverland, like the Lost Boys, Tinker Bell, etc.
Another theme is self - discovery. Henry, who may come from a more ordinary world, gets to learn about himself in the extraordinary world of Peter Pan. He discovers new abilities and strengths, and often has to confront his fears. For example, in many fanfictions, Henry realizes he can be braver than he thought when facing the challenges in Neverland.
One of the themes is self - discovery. Peter Pan Jr might learn something new about himself during his adventures. Also, the theme of magic is prevalent. Since it's set in Neverland, there are often new magical elements introduced in the fanfictions. For example, new spells or magical creatures that Peter Pan Jr has to deal with.
A common theme is the exploration of different worlds. Ariel comes from the underwater world and Peter from Neverland. Fanfictions often focus on how they adjust to each other's realms.
The theme of discovery is also prevalent. Melody discovers the wonders of Neverland, and Peter Pan discovers new aspects of himself through his relationship with Melody. Also, the theme of good versus evil often plays out, with Captain Hook as the main antagonist and Peter Pan and Melody having to use their wits and courage to overcome his schemes.