One common theme is the exploration of their relationship. Whether it's a friendship or a budding romance, it's often at the center of the story. For example, in many fanfictions, Danny tries to protect Paulina from ghosts, which shows his care for her.
One interesting storyline could be Paulina finally realizing Danny Phantom and Danny Fenton are the same person. She could initially be shocked but then come to accept it and they team up to fight a new powerful ghost. It would add a whole new dynamic to their relationship.
A plot could involve Paulina getting a special power that links her to the ghost world somehow. Danny Phantom discovers this and has to help her control it. During their time together, they grow closer. Paulina begins to question her feelings for Danny, both as a human and as Danny Phantom. And there could be a sub - plot where another ghost tries to use Paulina's new power for its own evil purposes.
One common theme is transformation. Paulina often has to transform her view of Danny from a loser to someone she can respect or even like. For example, in many fics, she starts to notice Danny's heroic side as Danny Phantom.
One common theme is self - discovery. When Danny overshadows Paulina, both characters often learn something new about themselves. For example, Paulina might discover that there's more to Danny than she initially thought.
One great Danny Phantom Paulina fanfiction is 'Paulina's New Perspective'. It shows Paulina starting to see Danny in a new light, beyond his 'loser' exterior. It's really interesting how the author develops their relationship gradually.
In a common 'Danny Phantom' fanfiction where Paulina finds out, the plot often begins with Paulina being in the right place at the right time. For instance, she could be near the Fenton portal when Danny is coming out in his ghost form. At first, she is terrified, thinking he is some kind of monster. But as Danny tries to explain his situation, she slowly starts to understand. This new knowledge then affects their relationship in school, with her having to keep his secret and also dealing with her own feelings about this new side of Danny. Sometimes, it can also lead to her getting involved in Danny's battles against other ghosts, either by accident or by choice.
One popular Danny Phantom overshadow Paulina fanfiction is 'Overshadowed Hearts' on FanFiction.net. It has an interesting take on Danny overshadowing Paulina and how their relationship evolves in a unique way.
For Danny Phantom, his sense of responsibility could be explored more. He always feels the need to protect Amity Park from ghosts. In a fanfiction, this could lead to some conflict with Paulina when he has to choose between saving her and the town. Paulina, on the other hand, her vanity could be a trait to play with. Maybe she initially only cares about how Danny Phantom looks as a hero but then comes to appreciate his real self.
One popular 'Danny Phantom' fanfiction where Paulina finds out could be 'Paulina's Discovery'. In it, she might find out about Danny's ghost powers in a really unexpected way, like during a school event when Danny has to use his powers to save everyone. Another could be 'Paulina Unveiled' where she stumbles upon Danny's secret identity while investigating some strange happenings in the school. And there's also 'When Paulina Knew' which has a more emotional take on her finding out, leading to a complex relationship shift between her and Danny.