Well, initially, Draco would be in a state of confusion. His character development would be about finding his footing again. Since he doesn't remember his past actions and beliefs, he has the opportunity to form new ones. He could become more curious about the world around him, rather than just following the pure - blood dogma. This new - found curiosity can lead him to explore different aspects of magic and relationships. When his memories do return, he'll have a different perspective on life, having experienced this period of self - discovery during his memory loss.
The memory loss can be a catalyst for Draco's growth. He has to re - evaluate his identity. He might discover that he was not truly happy with the person he was before. As he struggles to remember, he could develop traits like humility and empathy. For instance, if he was once arrogant towards house - elves, during his memory loss, he could interact with them in a more equal and kind way. When his memory comes back, he may choose to keep these new - found qualities, changing his character for the better.
One great fanfiction with this theme is 'Fading Memories'. It beautifully explores Draco's struggle as he loses his memory and how it affects his relationship with Harry. The story is full of emotional moments and really delves deep into their characters.
It would likely make Draco more self - reflective. Discovering a twin would force him to question his own identity. He might start to see himself not just as a Malfoy heir but as an individual separate from the expectations placed on him by his family.
One common trope is the 'caretaker' role. Usually, Harry takes on this role, looking after Draco as he struggles with his memory loss. It allows for a lot of tender moments between them.
A possible plot is that Draco loses his memory and finds himself in an entirely different environment. Maybe he's found by a group of outcasts or muggles who have no idea about the wizarding world. As he tries to piece together his past, he discovers new things about himself and the world around him that he had never considered before. He could also develop new relationships outside of the pure - blood wizarding society he was used to, which would change his perspective once his memory returns.
The loss would probably make Ash more humble. He had been confident in his abilities, but this setback would show him that there are always stronger opponents out there. He may also become more empathetic towards other trainers who have experienced losses. He might start to share his own experience of losing to encourage others. This could be a big step in his character growth as he becomes more than just a battle - hungry trainer.
Well, Snape's care can make Draco more confident. Knowing he has someone like Snape looking out for him gives him a sense of security. This can lead to Draco being less arrogant and more self - aware. He might start to question some of the pure - blood supremacist ideas he was raised with, as Snape's care could show him that there are more important things than just blood status.
When the nightmare is about his own misdeeds, it can be a turning point for his character. He might become more remorseful and try to make amends for his past actions. This could involve him being nicer to those he's bullied or trying to help in the fight against the Dark forces instead of being on the wrong side.
It can make him more vulnerable. After getting hit, he may realize he's not invincible. This could lead to a more empathetic side of him emerging.
The magic system can be a catalyst for Draco's character development. For instance, if the fanfiction has a unique magic system where using dark magic has visible corrupting effects on the user. Draco, having been exposed to dark magic in his family, might start to resist it when he sees these effects on himself or others.
Her friends would be extremely worried and would do everything they can to support her. They might feel guilty if they think they could have prevented her memory loss. Her family, if there are any in the story, would be heartbroken and try to take care of her like she was a child again.