In some 'sonic gets killed' fanfictions, it could be due to a self - sacrifice. Sonic might sacrifice himself to save his friends from a deadly threat like a world - destroying weapon. His death then becomes a catalyst for his friends to come together and continue his legacy of protecting the world, while also dealing with the grief of losing him.
One possible plotline could be that Sonic is facing a new and extremely powerful villain who manages to outwit him in a battle and ultimately kill him. This could lead to his friends, like Tails and Knuckles, vowing revenge and setting out on a journey to become stronger to face the villain.
Perhaps in the fanfiction, Sonic gets caught in a trap that was set for him by an evil scientist. The trap is designed in such a way that it slowly drains his energy until he succumbs and dies. His death then causes chaos in the world he once protected, and the other characters have to figure out how to fill the void he left.
One possible plotline could be that Tails is killed by a powerful enemy during a battle to protect his friends. Maybe a new, extremely strong villain emerges and Tails sacrifices himself to buy Sonic and the others time to escape. Another could be that there is some sort of accident in Tails' workshop while he is working on a dangerous experiment, leading to his untimely death. It could also be that in a dark alternate universe, Tails is targeted and assassinated by an evil organization that wants to disrupt the balance of power in the world he lives in.
One possible plotline could be Sonic struggling to come to terms with his new robotic parts. He might face challenges in his speed or his usual acrobatic abilities and have to relearn how to move and fight. For example, his robotic parts could malfunction at crucial moments.
One possible plot could be that Sonic is bullied by a new group of antagonists in his world. They might make fun of his speed, saying it's not all that great and constantly tripping him up during races. Another plot could be that Sonic is bullied by some of the other characters who are jealous of his popularity. They start spreading false rumors about him, which makes some of the animals in the forest start to avoid him.
One possible scenario could be that Sonic is shot by a robotic enemy while trying to protect his friends. He might then have to rely on his friends to get him to safety and find a way to heal his wound. Another could be that he's shot by a misfiring weapon of a friendly character, leading to a lot of guilt and a race to save Sonic's life.
One possible plotline could be how the other Avengers react to Steve's death. Some might go into deep mourning while others could be driven by revenge. For example, Tony might use his technology to try and find out who was responsible and bring them to justice.
Well, in a 'Sonic gets kidnapped by Eggman' fanfiction, there could be a plot where Eggman tries to turn Sonic into a weapon. He might experiment on Sonic, but Sonic resists with his strong will. Meanwhile, Sonic's friends like Tails start searching for him. Tails could use his intelligence to track down Eggman's hideout. And when they finally find Sonic, there's an epic battle between Sonic's friends and Eggman's forces to free Sonic.
Well, it could be that in this fanfiction, Frisk gets bullied because they come from a different background than the others. The bullies target Frisk for being an outsider. As the story progresses, Frisk could meet a mentor - like character who helps them gain confidence and teaches them how to deal with the bullies. Frisk might then use kindness and understanding to turn the situation around and make the bullies realize their mistakes.
Perhaps Sakura decides to learn self - defense techniques to protect herself from the bullies. This could lead to her gaining confidence and eventually standing up to them on her own.
One possible plotline could be that Hiccup, with his unique leadership skills and kind heart, attracts various female characters from his world. They might initially be drawn to his courage in facing dragons. For example, Astrid could be part of the harem, and together with other female Vikings, they form a group that supports Hiccup in his adventures and also have romantic interests in him. Another plotline could involve Hiccup meeting new female characters from different tribes during his travels, and they all fall for his innovative ideas about co - existing with dragons.
One possible plotline could be that after Deeks gets shot, his colleagues in the team rush to his aid and there is a tense moment at the hospital as they wait to see if he'll survive. They start to reflect on their relationships with him and how important he is to the team.