Well, in some fanfictions, Percy might go on a dark and brooding path. He could isolate himself from his friends at Camp Half - Blood, feeling like he's alone in the world now that his mother is gone. He might throw himself into more dangerous quests, almost with a sense of self - destruction, believing that he has nothing left to lose.
In other fanfictions, Percy could use his mother's death as a motivation to become stronger. He'd train harder, learn new skills, and vow to protect those he still has. He might also try to find a way to bring his mother back, perhaps by searching for some long - lost magic or making a deal with a powerful deity, all while still being the hero we know from the original series.
There are also fanfictions where Percy's mother's death causes him to question his whole existence. He wonders why the gods let such a thing happen to a good person like his mother. This internal struggle could lead him to have some tense interactions with the gods. He might even consider rebelling against them in some way, feeling that they are partly responsible for his mother's death.
Well, Percy is a resourceful character. In this fanfiction scenario, he could start by investigating the reasons behind being forced to marry Artemis. If it's some sort of plot by an enemy god, he'd work on uncovering it. He might also use his skills in combat and his connection to water to create some sort of diversion or escape plan if things get too tough. And he'd definitely have some internal conflict, given that Artemis is a virgin goddess and such a marriage goes against her nature too.
A theme of growth is also present. Through his mother's death, Percy has to grow up faster and become more independent. He has to make decisions on his own without his mother's guidance. Also, the theme of family is redefined. With his mother gone, Percy's concept of family expands to include his friends at Camp Half - Blood more deeply.
On the other hand, she could try to honor Percy's sacrifice. Annabeth might focus on the reasons why Percy died for her and strive to fulfill any tasks or goals that he might have hoped she would achieve. She would carry on his legacy in a positive way, even though she is heartbroken.
He might focus on his training. Percy could use the time alone to practice his sword - fighting skills or improve his control over water. This would not only keep him occupied but also make him more powerful.
He might use his sword skills and his ability to control water. For example, he could create shields out of water to protect himself from attacks. He would also try to find any weaknesses in his enemies. If there are any water sources in Tartarus, he could use them to his advantage, like making geysers to distract or attack his foes.
In some versions, Poseidon might keep Percy's mother at a distance to protect her from the wrath of the other gods. He could send her gifts secretly to let her know that Percy is okay. For example, he might send a magical seashell that can communicate with Percy.
Well, it would probably shatter Annabeth. Percy is her closest friend and love. His death would leave a huge void in her life. She might become more withdrawn, consumed by grief. She could also become more determined to carry on Percy's legacy in the fight against the forces they were up against.
After Percy's death, his friends might start a rebellion against the Gods. They would be angry and feel that Percy was unjustly killed. This could lead to a full - scale war between the demigods and the Gods.
Percy Jackson has a curious personality. In the context of the multiverse fanfiction, this curiosity will lead him to want to understand how the multiverse works. He'll be asking questions and trying to figure out the rules. His brave and head - strong nature means he won't shy away from any threats or challenges in the multiverse. He'll face them head - on, whether it's a menacing version of a monster from his world or a completely new threat from an unfamiliar universe. His personality traits combined will shape his reactions in the fanfiction in a very dynamic way.