He becomes more responsible. He can't just go on ghost - fighting sprees like before. He has a whole kingdom to think about.
When Danny Phantom becomes king in fanfiction, his character undergoes significant changes. He becomes more diplomatic. Instead of just reacting impulsively, he has to think about the consequences of his actions for the entire kingdom. His carefree attitude might lessen as he takes on the weight of leadership. He also becomes more empathetic towards different groups in the kingdom, whether they are the wealthy nobles or the poor peasants. He realizes that his decisions affect everyone, and so he has to be more inclusive in his thinking. Moreover, he might become more patient, as ruling a kingdom requires dealing with a lot of bureaucracy and different personalities.
Danny's relationships change drastically. He distances himself from his friends and family. He no longer values their opinions or support. Instead, he might see them as obstacles or even threats. His friendships with Sam and Tucker are strained as he starts to engage in activities that they find morally wrong, like using excessive force on other ghosts or humans who get in his way.
His friends Sam and Tucker could be his allies. They've always been there for him and would likely support him in his new role as the Ghost King.
Well, he might bring some unique changes. He could use his ghost powers to protect the kingdom in a very different way. Maybe he'd make new laws that are fairer to both the living and the dead.
Jazz might become more impulsive. Since she's used to being in control as a human, the newfound freedom and powers of being a ghost could lead her to act without thinking as much. Also, her relationships with her family and friends would change. She would have to find new ways to interact with them, especially Danny. They would now share a unique bond as both being part - ghost.
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.
His powers could become more ice - based. Instead of the normal greenish - blue energy, his blasts might turn a frosty white. His ability to fly could also be affected, with a cold trail following him as he moves through the air.
He might become more noble. Archangels are often seen as noble and pure beings, so Danny could take on these traits. His sense of justice could become more absolute.
He often becomes more withdrawn. Instead of being the outgoing hero, he might shy away from fighting ghosts due to the abuse he's suffered, which has led to his depression. His self - confidence is shattered, and he may doubt his abilities.
The plot could change in terms of her love interests. Instead of the typical male - led romantic arcs, there could be new female - centered ones. For example, she might have a different type of relationship with a male character, where she takes the lead more often.
His personality might become more innocent. As a kid, he's not as cynical as when he was a teen. He might be more open - minded and trusting.