You could also develop Sgt Frog's human form by giving him new fears and desires. Since he's an alien in a human body, he could be terrified of things that humans find normal, like going to the dentist. And his desires could be more related to his alien home, like finding a way to recreate his favorite alien food in the human world.
Well, in fanfiction, you could develop Sgt Frog's human form character by emphasizing his confusion in the human world more. For instance, he could constantly misinterpret human social cues, leading to humorous situations. Maybe he thinks a simple handshake is a sign of a lifelong bond and gets really attached to people after just one handshake.
One storyline could be that Sgt Frog, in human form, gets a job at a local coffee shop. He tries to fit in with the human world while still having his alien instincts. For example, he might accidentally use his alien strength to break the coffee grinder and then has to figure out how to fix it without revealing his true identity.
One common theme is cultural exchange. Since the Sgt Frog characters are aliens, there's a lot of opportunity to explore how their culture and human culture interact. For instance, they might compare their food, music, or art forms.
One popular sgt frog human fanfiction might be those that explore the interactions between the alien characters and human characters in a comical way. For example, stories where Keroro and his squad try to blend in with human society and the humorous misunderstandings that occur.
Well, as humans, Elena could be less of the damsel in distress. She could be more assertive and have her own set of goals that don't revolve around vampires or the supernatural. For Klaus, he could lose his violent tendencies and instead be a more brooding artist type. He might use his creativity to deal with his past traumas.
For the princess, you could develop her character by showing her growth in courage. At the start, she might be hesitant about the whole frog - turning - into - a - prince situation, but as the story progresses, she becomes more fearless. For the frog prince, you can show his transformation from a somewhat self - centered prince (before the curse) to a more empathetic and caring person through his experiences with the princess.
Popular sgt frog fanfiction often has creative plotlines. They might take the existing characters and put them in new and unexpected situations, like in a different time period or on a new planet. This allows for fresh interactions between the characters.
If the fanfic involves the local community, characters like the neighborhood kids or the local store owner could be main characters as well. They could interact with Sgt Frog and his gang in various ways, such as being involved in a lemon - picking competition or a lemonade - selling event that Sgt Frog and his friends participate in.
They can be developed through their reactions to the transformers. For instance, a human character might start off being scared of transformers but then grow to respect and admire them. Their values and beliefs can also play a big role. A human who values peace might try to convince the transformers to avoid unnecessary battles.
In fanfiction, Natsu's Dragon Form could be developed to have a symbiotic relationship with other characters. For example, he could combine his power with Lucy's Celestial Spirit Magic in a way that enhances both of their abilities while in his Dragon Form. This would create unique and interesting battle strategies.
In fanfiction, their characters can be developed more freely. For example, Hal might be shown as more vulnerable than in the original show. Maybe he has a harder time controlling his vampire instincts and Alex has to help him. This is different from the show where he usually has a better grip on himself.