Who could be the main antagonist in 'danny phantom is betrayed by sam fanfiction' if Sam is the one betraying Danny?

Vlad could be a great antagonist. He might see the baby versions of Danny and Sam as an opportunity to finally get rid of Danny for good. He could try to use their weakened state to his advantage and steal Danny's powers once and for all.

Well, it would be the evil Danny Phantom. Consider this: he has gone through some transformation that has made him evil. Now he is using plants in ways that are harmful or against the natural order. Sam, who has a connection to plants and a moral compass, is in direct opposition to him. He creates the conflict in the story by his evil deeds, and Sam has to find a way to overcome his actions, so he is the main antagonist.

It could be Vlad Masters. Since he's always been interested in Danny's half - ghost state, he might see Sam becoming a half - ghost as an opportunity to gain more power or to use her against Danny. He could try to manipulate her new powers for his own evil plans.

One possible scenario could be that Sam betrays Danny's secret identity to someone he doesn't trust, like a ghost hunter. Maybe she does it out of jealousy if Danny starts getting closer to another character.

The two main characters are Danny Phantom and Sam. Danny's transformation into an evil version of himself creates a complex dynamic. Sam, with her unique personality and her relationship with Danny, has to step up. She may be the only one who truly understands Danny enough to be able to combat his evil side. And depending on the fanfiction, other characters like Tucker or Jazz might also make appearances and contribute to the story in different ways.

The main characters would obviously be Danny and Sam. Danny, with his ghost - fighting abilities as Danny Phantom, is a key figure. He can fly, become invisible, and has super strength among other powers. Sam, on the other hand, is Danny's strong - willed and intelligent friend. She is often the voice of reason and also has a deep knowledge of the supernatural which helps in their adventures.

Sam is also quite popular. Her goth - like personality and her strong - willed nature make her an interesting character. In fanfiction, she can be portrayed in different ways, like being even more involved in Danny's ghost - fighting activities.

One idea could be that Danny and Sam have kids in the future and their kids inherit Danny's ghost powers. The story could focus on how they learn to control their powers while also dealing with normal kid stuff like school and making friends. It would be interesting to see how Sam, as a mom, guides them through this.

In a fanfiction, if Danny overshadows Sam, he might be trying to protect her from a danger she's unaware of. Maybe there's a ghost that's targeting Sam, and Danny can't be with her all the time, so he overshadows her to give her the ability to defend herself. He could transfer some of his ghost powers to her for a short time. This would create a lot of drama and action in the story, with Sam having to figure out these new powers while still being herself at the core.

Well, perhaps in the future, Danny and Sam get married. They have a family and are trying to live a normal life, but their past as ghost hunters keeps coming back. Their kids start to show signs of having special powers or an interest in the supernatural. Sam and Danny then have to teach them about the world of ghosts while also protecting their family from old enemies that resurface.