In some fanfictions, a new super - powerful villain might be introduced who has unique abilities that give them an edge over Wonder Woman. This villain could use their powers to outwit and physically overpower her.
One possible scenario could be in a battle against a powerful new villain. Maybe this villain has some sort of weapon that can penetrate her defenses, like a magic blade. Another could be that she's caught in a trap set by her enemies while trying to protect an innocent. In some fanfictions, she might also get hurt because she's overexerting herself to save a large number of people all at once.
Maybe it takes place in an alternate universe where the world is a bit different. Batman is more open with his emotions. He takes Wonder Woman to a special place, like an ancient, hidden garden. There, he tells her how much she means to him, not just as a teammate but as someone he has romantic feelings for. He might talk about how her strength and beauty have always attracted him, and how he has been trying to hide these feelings for a long time but can't anymore.
One possible scenario could be that they are in the middle of a life - or - death battle against a common enemy. In the heat of the moment, as they realize how much they rely on each other, they share a kiss. It could be a moment of pure instinct and connection.
In some 'goku gets hurt fanfiction', he might get hurt while protecting his friends or family. For example, he could take a fatal blow meant for someone else. This would not only physically harm him but also add an emotional aspect to the story as his loved ones would be worried and try to save him.
In the fanfiction, perhaps Loki's sickness is a result of some magical backlash. As he gets sicker, he could start having strange visions or nightmares that are related to his past misdeeds. His loyal followers might then try to find a cure for him, leading to an adventure to seek out a powerful healer.
Well, in some fanfictions of this kind, Naruto could be tortured physically by being chained up and beaten. His captors might also starve him or deprive him of water to weaken him. It could also be that they use some sort of dark magic or forbidden techniques on him that cause extreme pain and discomfort.
Well, perhaps in the fanfiction, Goku gets mad when he discovers that someone has been using his name for evil deeds. This would go against his values of justice and protecting the innocent. He might get really angry and go on a search to clear his name and stop the impostor. Or it could be that a new, extremely powerful villain emerges and starts to destroy planets without any remorse. Goku, being the defender of the universe, would be enraged by such senseless destruction and would confront the villain with all his might.
One possible scenario could be that he is killed in a lightsaber duel by a powerful Sith opponent. Maybe this new Sith has some secret technique that Anakin couldn't counter.
In this fanfiction, perhaps John catches a mysterious illness that has strange symptoms. It could be a magical malady in a fantasy setting, like a curse that makes him age rapidly.
Maybe Harley could get hurt during a fight with a supervillain. For example, she might be outnumbered and take a hard blow.