Well, often there are themes related to the clash of the mortal and divine worlds. Percy being half - mortal and Hades being a god, their relationship resulting in mpreg would bring up issues like how the pregnancy would be carried out in the context of different natures. Also, themes of acceptance, both from themselves and from the other characters in the story, are quite common.
Well, it depends on what you consider 'good'. Some people might find the idea of Percy Jackson and Hades in an mpreg scenario interesting from a creative and out - of - the - box perspective. You could try searching for it on FanFiction.net too. Just be prepared for a wide variety of writing styles and quality levels, as not all fanfictions are created equal.
In fanfiction, Percy Jackson as the champion of Hades could bring a whole new dynamic. He might have to deal with the darker aspects of the Underworld. For example, he could be in charge of ensuring the souls are properly sorted, which is a huge responsibility.
One common theme is the exploration of new family dynamics. Since it involves a male pregnancy, it changes the way relationships are perceived within the Percy Jackson world. For example, how Percy's friends and family support or react to his situation.
One common theme is the exploration of Hades' character. Many fanfictions try to humanize him, showing that he's not just the 'bad guy' as he's often portrayed in the original stories. For example, they might show his love for his family in a different way.
One common theme is the exploration of power dynamics. Since Hades is a powerful god and Percy has his own set of powers, fanfictions often play with how they interact and who has the upper hand in different situations. Another theme is family relations. Hades has a complex family, and Percy's own family situation is also quite intricate. Fanfictions might explore how their family backgrounds affect their relationship and actions.
One idea could be Percy having to mediate between Zeus and Hades during a major feud. Since he's the son of both in this fanfiction, he has a unique connection to them. He could use his powers and his knowledge of both of their domains to try and broker peace.
One great fanfiction idea could be a story where Zeus, Poseidon and Hades have to team up to face a common threat that is even more powerful than them. Maybe a primordial being awakens and they must put aside their differences. In this story, Percy could be the mediator between them, using his unique position as the son of Poseidon to try and keep the peace among the three powerful gods.
You can start by giving her a distinct personality. Maybe she's shy because she's always been feared for her father's sake. Then, gradually show her growing confidence as she discovers her own strengths. For example, if she has the power to raise small skeletons as minions, at first she's scared of it, but later she learns to use it for good. Also, explore her relationships with other characters. Her friendship with Percy could be based on mutual understanding of being different among the demigods.
One interesting story could be 'The Unexpected Miracle'. In this fanfiction, Percy finds himself in a situation that leads to mpreg in a very magical and unexpected way. The author does a great job of blending the elements of the Percy Jackson universe with this unique concept.