In the 'Danny Phantom becomes a mother fanfiction', it could be that Danny is magically transformed into a mother figure. One possible plot is that he discovers a new side of himself as he nurtures and protects those around him in a more maternal way. He could use his ghost powers in creative ways to take care of his 'family', like using his intangibility to keep the kids out of harm's way or his ectoblasts to create a safe environment for them.
Well, perhaps Danny Phantom, in this fanfiction, could be turned into a mother due to some magical mishap. Maybe he has to deal with the daily tasks of motherhood like taking care of 'phantom kids' who have unique powers. He might struggle to balance his own heroic duties with the newfound maternal responsibilities.
In the fanfiction of 'Danny Phantom becomes a god', perhaps he first discovers his new divinity through some sort of ancient prophecy or a powerful artifact. Once he becomes a god, he could decide to create a new realm where ghosts and humans can co - exist peacefully. He might also use his powers to give certain humans the ability to see and interact with ghosts in a positive way, in order to bridge the gap between the two worlds. There would likely be a struggle as he tries to convince other powerful entities in the Ghost Zone that his way is the best for everyone.
In a 'Danny Phantom becomes villain' fanfiction, it could be that Danny has a major falling out with his friends and family. He feels betrayed and abandoned. This emotional turmoil causes him to snap and turn to the dark side. He then uses his ghost powers to take revenge on those who he thinks have wronged him, becoming a feared villain in the process.
Besides Danny, the main characters could include some of the friendly ghosts from the Ghost Zone. They could be like Danny's support system in this new motherhood journey. Also, the school bully Dash might be in the story. He could start off making fun of Danny but then gradually come to understand and respect Danny's new role. And there could be a mysterious ghostly figure that either helps or hinders Danny in his newfound motherly duties.
It could be that Jazz is turned into a ghost as part of a ghost's plan to get back at Danny. Once she becomes a ghost, she has to quickly learn the ropes of the Ghost Zone. She may make new ghost friends who help her understand her new existence. And she might start to develop her own unique fighting style as a ghost, different from Danny's, which could be really interesting to explore in the fanfiction.
One possibility is that Danny gets tired of constantly being the hero and facing so much pressure. He might start to think that if he was on the other side, he wouldn't have to deal with all the expectations. So he begins using his powers for his own gain, like scaring people to get money or to make others do what he wants.
One possible plot could be that Danny Phantom, through some magical mishap or powerful spell, is transported to the world where Jack Frost exists. Danny has to figure out how to get back home while also dealing with the new powers and rules of Jack Frost's world. He might start out as an outsider but gradually gain the respect of the other winter spirits as he uses his ghost - fighting skills in a new way.
Well, it could be about Danny having to face various challenges from other powerful ghosts who don't want him to be the king. Maybe he has to prove his worth through battles and outsmarting his enemies.
Well, in the 'Danny Phantom becomes colder' fanfiction, it could be that Danny's connection to the Ghost Zone is somehow altered. This alteration makes him colder in nature. His ectoplasmic energy could be affected, causing his body to emit a cold aura. His relationships might also suffer. Sam and Tucker may initially be confused by his sudden change in behavior. They might think he's pushing them away on purpose. Danny, on the other hand, could be struggling with this new coldness inside him, not fully understanding what's happening. He might try to isolate himself to protect others from this strange new aspect of himself, which would add a layer of emotional drama to the story.
Well, one possible plot could be that Sam gets exposed to some ectoplasmic experiment gone wrong. Maybe she was trying to help Danny with something related to the Ghost Zone and ended up getting infused with ectoplasm. As a half - ghost, she'd have to learn to control her new powers, just like Danny did. She might struggle with the idea of being part - ghost at first, especially if it affects her relationships with her friends and family who might be a bit freaked out.
Well, perhaps Danny has some really bad experiences that make his heart cold. Maybe he gets betrayed by his friends or family, which changes his personality completely.