In Shark Boy and Lava Girl fanfiction, a prevalent theme is teamwork. Given their complementary abilities, they team up to face various challenges. The theme of good versus evil also shows up a lot. They are usually the heroes fighting against some form of evil, whether it be a villain or a natural disaster. And the theme of exploration is common too. They explore new lands or underwater worlds in many of the stories.
One great Shark Boy and Lava Girl fanfiction is 'The New Adventure of Shark Boy and Lava Girl'. It continues their story in a new world filled with strange sea creatures and fiery mountains. Another one is 'Shark Boy's Secret Mission' which focuses on Shark Boy having to complete a dangerous mission alone, while Lava Girl is trapped. There's also 'Lava Girl's Hidden Power' that explores Lava Girl discovering a new and powerful ability within herself.
Another idea is a fan fiction that focuses on the backstories of Shark Boy and Lava Girl. How they got their powers, their early days of discovery, and how they first met. This could add a lot of depth to their characters.
Well, obviously Shark Boy and Lava Girl themselves are essential. But adding Max, the main character from the movie who brought them to life in his dreams, can add an interesting dynamic. He could be in a situation where he has to call upon them again for a new adventure.
The Lava Girl origin story likely involves her coming into existence in a world filled with unique elements. Maybe she was born out of a volcanic eruption, which endowed her with powers related to lava. This could mean she has the ability to control lava, use it for protection or attack, and be immune to its heat.
I'm not sure specifically what the 'fire girl and wax boy story' is about without more context. It could be a fictional story about a girl with some sort of fire - related power and a boy related to wax, perhaps they have an adventure or some sort of relationship in the story.
I'm not sure of the specific 'Fire Girl and Wax Boy' story. It could be a very unique and perhaps a self - created or local folktale. Maybe Fire Girl has the power related to fire, like being able to control flames or is immune to heat. And Wax Boy might have some special connection to wax, perhaps he can shape wax into various forms easily. But without more context, it's hard to tell the whole story.
Another antagonist could be a jealous fire spirit. This fire spirit is envious of Fire Boy's connection with Water Girl. It tries to turn Fire Boy against Water Girl by making him believe that she will eventually put out his fire forever. So it creates misunderstandings between them to try and break their friendship.
The main characters are obviously the fire girl and the wax boy. The fire girl might be a character with unique abilities related to fire, like being able to create or control flames. The wax boy could have his own set of skills or characteristics associated with wax, perhaps he can manipulate wax in some way. They are the central figures around which the story presumably revolves.
Fire Girl could be brave. Since fire is often associated with courage, she might be fearless in the face of danger. Wax Boy might be patient. Working with wax requires a certain level of patience.