He could be developed by having to form an unlikely alliance with the God of Darkness. Through this alliance, Harry would learn new forms of magic that are darker and more powerful. This would change his perspective on magic and his role in the wizarding world. For example, he might start to question the strict rules of Hogwarts about 'dark' magic. He would have to navigate this new knowledge while still staying true to his friends and the values he has always held dear, which would be a great opportunity for his character to grow.
In this fanfiction, Harry could be developed further if he has to sacrifice a part of his 'light' magic to understand the God of Darkness. This could lead to him being an outcast among some of his friends at first. But as he continues to explore the power of the God of Darkness, he realizes that there is a balance between light and dark magic. He then uses this new - found knowledge to bridge the gap between different magical factions in the wizarding world. His character would grow from a simple 'good guy' to a more complex figure who understands the nuances of magic and power.
One way could be to expand on the character interactions. Have Harry and his friends travel through the Stargate and meet different alien species. They could use their magic in ways that surprise the aliens and vice versa. For example, the Asgard could be intrigued by the concept of magic.
Her character can be developed further by emphasizing her magical abilities. Since she comes from the Gaunt family, she likely has a strong magical lineage. Fanfiction could explore her learning and mastering of spells that were perhaps lost in the family or unique to her bloodline.
One way is to explore the magical interactions between them. For example, Harry could try to use his spells against Odin's divine powers and see what happens. This would add more action and tension to the story.
The Parselmouth could start to understand the emotions and thoughts of snakes more deeply. For example, they could sense when a snake is about to attack or when it's feeling threatened, not just what it says.
If Harry wears armor, it could make him seem more like a knight. His sense of chivalry could be enhanced. He might be more confident in battles, which could lead to him taking more risks. This would show his growth as a character, as he becomes bolder in the face of danger.
Dobby's character could be developed further by showing his growth in confidence. After being freed, he could become more assertive in his actions and decisions, not just relying on his loyalty to Harry but also on his own sense of right and wrong.
In a 'Harry Potter as a Necromancer' fanfiction, Harry's development could involve him learning from his mistakes. For example, if he accidentally creates a dangerous undead creature, he realizes the importance of control. He could also become more empathetic towards dark wizards who might have been drawn to necromancy for reasons like his own. His relationships with his friends would change too. Some might distance themselves, while others would try to understand and help him. This would force Harry to grow and become more self - reliant in his journey with necromancy.
To develop it, you could introduce a new character who is a hybrid of a wizard and a Cybertronian. This character could be the link between the two worlds. Harry could then be drawn into the Cybertronian world through this character. In the Cybertronian world, Harry could discover that magic has a different manifestation. He could learn to combine his magic with the technology of the Cybertronians. For example, he could use his wand to control the energy flow in a Cybertronian's body, or use a spell to enhance a Cybertronian's weapon. The story could also explore the ethical implications of mixing magic and technology, and how it affects both the wizarding world and the Cybertronian society.
One way to develop their relationship further is by showing them having deep conversations about their future. They could discuss what they want to do after Hogwarts, how they can change the wizarding world for the better. Also, they might start to understand each other's insecurities more. Hermione could open up to Harry about her fear of not being good enough sometimes, and Harry could share his concerns about living up to his reputation. This emotional sharing would bring them closer.
To develop Hecate, we could show her having a personal connection to some of the dark magic in the Harry Potter universe. She could have been involved in creating certain dark artifacts in the past, and now she sees Harry as a way to correct her past mistakes. This would give her a more nuanced and complex character.