I found this story on fanfiction.net and decided to show it to the Wattpad community. All rights to the author of this fanfiction - Hans50 - from whom I got permission to post this story here. He's an awesome writer and you should go check out his account and his other story: Betrayed Son of the Sea. Perseus Jackson is trapped in Tartarus. After the council of the gods, save a few, betray and sentence him to eternal suffering, something happens to our hero that will change him forever. He is tortured and cursed. With a horrible curse placed upon him that turns him into the things that he hunts and despise, will he suffer in the pit or will he thrive? He is the Monster Shifter. (By the way, this is not a Percabeth story. Just a heads-up for the Percabeth fans.) DISCLAIMER: I don't own this story, Hans50 and Rick Riordan do.

Perseus Jackson was tossed out like yesterday' s trash after he made a terrible mistake that was entirely on accident. He forgot about his promise from his time in Tartarus and used his control over liquids for death. After he was surrounded by monsters, he used his ability to destroy the monsters by boiling and freezing their blood. After Annabeth finds out, she is horrified of her boyfriend. Or ex-boyfriend. In fear of Percy, she cuts all ties with him and spreads the word. Percy's old friends are disgusted and avoid him. And to top it all off, Annabeth found a new boyfriend. The worst part? He is actually a decent person. It's impossible to hate him. Where does that leave Percy? Rotting in Tartarus-where he was sentenced to as a punishment. After receiving immortality and curses on top of curses, Perseus is ready to rise from the depths of Tartarus and unleash his rage.

The Traitor slammed the trident to the gods temple and he fell unconscious. He threw the weapons to the ground with disgust and hiked to the top of the small hill overlooking his home. After years of solitude, he was free. Thunder boomed and lightning flashed, and there, atop the small peak of Half-Blood Hill stood the green-eyed, black-haired son of Poseidon. 《●○●》 Completed: 31/07/17 ~ 7:45pm Editing Begun: 07/07/18 ~ 9:29am

Even though Percy escaped from Tartarus, a little part of him will always be down in that pit, raw and terrible. The evil he did down there left him feeling just like the things he fought so hard to kill; a monster. He is ready to end it all until he is reminded of the reason he fell into Tartarus in the first place: Annabeth. He fell in to save her, to preserve the mere possibility of seeing her fluffy blonde hair blowing in the wind once again, her striking grey eyes catching the sunlight as she gazed back at him. Annabeth gives Percy a reason to live once more, a reminder of all the beauty left in this world. She is the only thing that matters to him anymore, making him willing to do anything to keep them together. After all, he made a promise, and Percy Jackson always keeps his promises.