Create relationships between the characters. Maybe there are two crew members who have a love - hate relationship. As the story progresses, this relationship can evolve. They could start off arguing but then come to rely on each other during a crisis in the Titan submarine, which would show growth and development in both characters.
A survival - themed plot could be interesting. For example, the Titan submarine could get stranded in an unexplored part of the ocean. The crew then has to deal with limited resources, strange underwater phenomena, and their own internal conflicts as they try to find a way to be rescued.
Ymir's character could be developed by exploring her past more deeply. For example, her time as a Titan before joining the Survey Corps. This could make her more complex as she struggles with her identity. Christa, on the other hand, might develop by breaking out of her 'nice girl' persona. As she faces more challenges with Ymir by her side, she could become stronger and more assertive.
For Jean, show his growth from being a somewhat self - centered guy to someone who truly cares for the OC. Highlight his leadership skills in battle and how he uses them to protect the OC. For the OC, give her a distinct personality. If she's shy, show how she overcomes that around Jean. If she's brave, show how she inspires Jean.
Percy could be developed by facing moral dilemmas. For example, when dealing with the eldest Titan, he has to decide whether to trust this ancient and powerful being. This forces him to grow and think more deeply about right and wrong.
The character can start as a normal person who suddenly discovers their Titan connection. They should have flaws like being overly impulsive or having a fear of their newfound powers. As they interact with the Percy Jackson world, they learn from their mistakes and grow. For example, if they're too impulsive and it gets them into trouble with a monster, they'll learn to be more cautious. They can also develop relationships, like a mentor - mentee relationship with an older demigod who helps them understand their Titan side.
Writers can give the Female Titan more depth by exploring her emotions. Even though she is a Titan, she can still feel things like anger, fear, or regret. For example, showing her hesitation before attacking a particular character can make her more interesting.
Communication is key. They can start by simply talking about their daily tasks and experiences in the Destiny universe. For example, the Titan female can share stories about her battles on the front lines, and the Warlock female can talk about her research in the tower. This can lead to a deeper understanding of each other.
In fanfiction, Percy and Hermione's characters can be developed in various ways. Some writers might explore Percy's sense of duty and how it interacts with Hermione's thirst for knowledge. For example, they could be on a mission together where Percy's strategic planning, which he learned from his time in the Ministry, combines with Hermione's research skills to solve a complex magical problem.
They are often developed by exploring new relationships. For example, the bond between Bella and her new vampire family members can be deepened or changed in fanfiction. Sometimes, characters are developed by giving them new powers or abilities that were not in the original story.
Character development can also involve giving backstories to minor characters. For instance, a random demigod in the fanfiction could have a tragic past that led them to the Labyrinth battles. This not only fleshes out that individual character but also adds depth to the overall story. And for the main characters, their flaws could be explored more. Percy's impulsiveness could lead to more serious consequences in some fanfictions, forcing him to learn and grow from those experiences.