The impact on the other characters would be multi - faceted. Characters like Thalia, who has her own complex relationship with Percy, would be forced to reevaluate her views. She might become more cautious in her actions, not wanting to waste the sacrifice Percy made. For Zoe, it could be a life - changing event. She might feel an overwhelming sense of responsibility. The overall morale of the group might dip initially due to the loss of Percy, but they could also find new strength in his memory and strive to carry on his legacy.
Well, his sacrifice would likely have a huge impact. For Zoe, she might be filled with guilt and a new sense of purpose. The other characters like Annabeth could be deeply affected too. Annabeth might be angry at first that Percy made such a choice, but then she could use that anger to fuel her own actions in the story. His sacrifice could also inspire the other demigods to be braver and more selfless in their own quests.
It could be that Percy's sense of honor led him to sacrifice himself for Zoe. If he had made a promise to protect her, he would uphold it no matter what. Also, Zoe might have been the key to solving a major mystery or threat. Percy, realizing this, chose to sacrifice himself so that Zoe could continue and complete whatever task was necessary. Additionally, his love for his friends and the greater community of demigods might have made him believe that Zoe's survival was more important than his own.
Gwen would likely become more determined and strong - willed. Merlin's sacrifice would be a huge emotional blow to her. It might make her more resolute in fighting for the good he believed in, perhaps becoming a more fearless leader in Camelot. She may also carry a sense of guilt and a need to prove that his sacrifice was not in vain.
Serena's character development could be profound. First, she'd probably experience a great deal of grief. But through that grief, she could transform. She might become more fearless in battles, using Ash's sacrifice as motivation. Also, she could develop leadership qualities. Since Ash is no longer there to lead in some situations, she has to step up. She may also form new alliances and friendships as she tries to cope with the loss and move forward in the Pokémon world.
The other characters would likely be filled with grief. His friends would probably feel a deep sense of guilt, wondering if there was something they could have done to stop him. Artemis herself might feel a heavy burden, knowing that Percy sacrificed his life for her. She may vow to honor his memory in some way.
It would greatly impact Harry. He would be devastated by the loss of Hermione, but it could also fuel his determination to fight against the bad guys. He might become more reckless in his pursuit of justice, or he could become more cautious, not wanting to waste Hermione's sacrifice.
Well, Shikamaru would be one of the characters who would take Naruto's sacrifice very hard. He had always respected Naruto's determination. His reaction might be to become more serious about his duties in the village, feeling that he needs to step up in Naruto's absence. Hinata would be heartbroken too. She had deep feelings for Naruto. She might struggle to come to terms with his loss but also find strength in his selfless act. And all of the Konoha 11 would be united in their grief, vowing to protect the village and each other more fiercely in Naruto's memory.
His friends like Shikamaru would be deeply affected. Shikamaru, who had always respected Naruto's tenacity, would be at a loss. He might think about all the times Naruto pushed forward despite the odds and feel guilty for not being able to prevent his death. Hinata would be inconsolable. She had deep feelings for Naruto, and his sacrifice would shatter her world. The other ninja from different villages that Naruto had befriended during his journey, like Gaara, would also be in mourning. They would see Naruto's sacrifice as a noble act that inspired them to be better protectors of their own villages and to work towards a more unified ninja world.
One possible scenario could be that Gwen is in danger from a powerful dark magic user. Merlin steps in to protect her, knowing that the only way to defeat the enemy is to sacrifice his own life force or magic. Another could be that Gwen is wrongly accused of a crime she didn't commit, and Merlin sacrifices himself to prove her innocence and save her from execution.
The other characters' reactions would vary greatly. For instance, Gary, who has always had a bit of a rivalry with Ash, would be shocked. He might initially be in denial but then realize the depth of Ash's selflessness. Professor Oak would be extremely sad and would see Ash as a true hero. The Gym Leaders that Ash has faced and befriended would hold commemorative events in their Gyms. They would talk about Ash's courage and how his sacrifice has left a huge mark on the Pokémon world. His sacrifice would also inspire younger trainers to be more like him.
Percy's leaving could also have an impact on the family's reputation in some fanfictions. People in the wizarding community might start to gossip, which could put additional pressure on the Weasley family. And some characters outside the family, like Harry, might feel a sense of loss as Percy was also part of his extended circle. He might try to mediate between Percy and the rest of the Weasley family if he gets the chance.