Well, her Zanpakuto's abilities might change. Zangetsu could have new powers that are more in tune with a female form. For example, it could have powers related to healing or protection in addition to its normal combat abilities. Her physical strength might be replaced with a more strategic and cunning approach to battles. She could use her surroundings and the enemy's weaknesses more effectively. And her connection to the Hollow inside her could also be different. It might be more of a partnership rather than a constant struggle for control, and this could lead to new combined forms with different power sets.
She would also become more self - reliant. Before, she often relied on Naruto and Sasuke for protection in tough situations. But with these new powers, she can stand on her own. This new - found independence might make her a bit more aloof at first as she gets used to her new capabilities. However, she would still care deeply for her friends. She might use her powers to protect them in ways she couldn't before, like creating powerful shields around them during battles.
Perhaps he gets a power related to mind control. This would allow him to influence the actions of his enemies or even make them fight among themselves. He could also gain a power that lets him absorb the powers of his defeated foes. So, every time he defeats an enemy, he becomes stronger by adding their powers to his own arsenal.
She would become more confident. Usually, Mary Jane is seen as a damsel in distress or a supporting character. With spider powers, she would be in the spotlight. She'd have to be more assertive and take charge of situations. For example, instead of waiting for Peter to save her, she'd be the one doing the saving.
Obviously, Dipper is the main character as the title implies. His sister Mabel is often included too. She might react in various ways to Dipper getting powers, like being excited or a bit jealous. Wendy is also a common character. She could be a source of support or a love interest for Dipper in some fanfictions.
In this fanfiction, Robin might get powers as a result of a genetic mutation triggered by a rare chemical. These powers could include enhanced speed and the ability to see in the dark. He initially hides his powers from the team because he's afraid of how they'll react. But when a dangerous situation arises where his powers could be the key to victory, he reveals them and they all work together to defeat the enemy and accept his new status.
Well, it could be that Naruto gets some kind of elemental powers from the comet. Maybe the comet is associated with a new, rare element that Naruto can then manipulate. This new power could give him an edge in battles, as his opponents would be unfamiliar with it. He could use it in creative ways, like combining it with his existing jutsu to create even more powerful attacks.
Master Chief could potentially gain the power of super speed in fanfiction. Imagine him being able to zip across battlefields in the blink of an eye, dodging enemy fire and quickly reaching objectives. This would make him an even more formidable force on the battlefield.