There's also a chance that an old enemy of the Thundermans, who has been lying low, resurfaces and decides to take revenge on the family by hurting Max. This enemy might have some new powers or a new plan that catches Max off - guard and leads to his injury.
A supernatural hunter might be responsible. Hunters in Teen Wolf sometimes misjudge humans as being involved with the supernatural. They could have thought Danny was a part of something bad and injured him while trying to 'deal' with the situation.
His family members would likely help him. For example, his parents, Hank and Barb, have a lot of experience with superpowers and could try to figure out what's wrong.
It could be a criminal that he and his brother are investigating. Maybe the criminal realizes that Charlie is getting too close to solving the case and decides to attack him to slow down the investigation.
It could be one of the regular bullies at her school. They might target Louise because of her feisty nature. They see her as a threat to their dominance in the schoolyard and decide to teach her a lesson. However, they don't realize the consequences of their actions and end up really hurting her.
It could be an enemy dragon. There are many rival dragons in the Fairy Tail universe, and if they see Natsu with Igneel, they might target Natsu to get to Igneel. Dragons can be very territorial and protective of their own, and an enemy dragon may see Natsu as a weak point to attack Igneel through.
It could be a rival from another house. For example, a jealous Slytherin who wants to take Ginny out of the Quidditch game. They might use some underhanded tactics to make her broom malfunction and cause her to get hurt.
Maybe it's a jealous acquaintance. If Kagami is really good at something, like she's a star in a particular activity, someone who is jealous of her success might set up a situation where she gets hurt. For instance, they could tamper with her equipment in a way that causes her to have an accident.
In some cases, it could be herself. Maybe she pushed herself too hard in her work or training, and her body or mind couldn't take it anymore. This self - inflicted harm could be a key part of the fanfiction's plot, as she then has to deal with the consequences and learn from her over - zealousness.
It could be an enemy from the underworld. Maybe a powerful demon or a vengeful spirit that has a grudge against her. They might use their dark powers to harm her, like sending a bolt of dark energy her way.
It could be an over - enthusiastic fan at an iCarly event. The fan might be so excited to meet Carly that they accidentally knock her down while rushing towards her.