You can develop her character by exploring her backstory. Maybe she was sheltered as a child because of Maxie's status. This could have made her curious about the outside world. Or perhaps she witnessed some of her father's less - than - noble deeds when she was young and it had a profound impact on her. Her reaction to these past events can show her growth and development as a character. Also, consider her skills and abilities. Is she a talented trainer? Does she have a special ability to communicate with certain Pokémon? These aspects can add depth to her character.
Another plot could involve her going on a journey to discover her own identity outside of being Maxie's daughter. Along the way, she meets different trainers and Pokémon, and she has to deal with the prejudice some have towards her because of her father. She could also discover some long - lost secrets about her family that change her perspective on everything.
Another interesting one is 'Maxie and the Mysterious OC'. This fanfiction creates a lot of mystery around the OC. The OC seems to have some sort of connection to Maxie that even he doesn't fully understand at first. The story is full of plot twists and great character development, making it stand out in the world of Pokemon Maxie OC fanfictions.
First, develop a strong OC. Give them a clear backstory, like where they came from, their family situation if relevant, and what their goals are. For example, if your OC is joining Team Magma, explain why. Second, stay true to the Pokemon universe's rules. Don't give your OC some overpowered ability that doesn't fit. Third, create an interesting relationship between your OC and Maxie. It could be a mentorship, a rivalry, or something else entirely.
One possible fanfiction could be about Maxie's childhood discovery of his love for geology. Maybe as a child, he was constantly exploring caves near his hometown, collecting unique rocks. This early interest led him to study more about the earth and eventually formed his extreme views in the Pokemon world regarding land expansion.
I really like the fanfiction 'Maxie's Redemption'. In this story, Maxie realizes the error of his ways after the events with Team Magma. It's a great character study of Maxie and how he tries to make amends in a world full of Pokemon.
Maxie could be shown as a curious child, always asking questions about the power of Pokemon. His inquisitive nature might have led him to start his own little 'research' group with other kids, where they would discuss and debate about different Pokemon types. This early group could be seen as the precursor to Team Magma.
One possible fanfiction could be that Levi and Maxie are on an adventure in the Pokemon world. They come across an ancient Aztec necklace that has some mysterious power. Maybe the necklace can control certain types of Pokemon or has the ability to unlock a hidden area filled with rare Pokemon. Levi, being the more cautious one, wants to study the necklace further before using it, while Maxie is eager to test its powers immediately.
One common theme is loyalty. They are often depicted as being loyal to each other or to their cause. Another is adventure. They go on various quests and journeys in the pokemon world.