One possible theme is obviously redemption itself. The Dragon King trying to atone for his past sins.
Well, the 'Redemption of the Dragon King Fanfic' might start with the Dragon King at a low point, realizing his wrongdoings. His redemption could involve facing challenges and making sacrifices. He may need to gain the forgiveness of those he has hurt. It could also be that the fanfic delves into his internal struggle, like his pride getting in the way of admitting his mistakes at first. And as the story progresses, we might see him grow and transform into a more noble and self - aware being through a series of events.
A third theme could be identity. The dragon's unique features, like the dragon eye, might set it apart from other dragons or creatures. The fanfic could delve into how the dragon views itself, whether it is proud of its power or feels burdened by it, and how it defines its own identity in the context of the story.
One possible theme could be self - discovery. As the heir of the last dragon, the character would likely be on a journey to understand their own identity and powers.
A theme might be the journey of acceptance. Since they are such different creatures, the fanfic could focus on how they come to accept each other. Maybe the dragon has to learn to see the value in the donkey's simplicity, and the donkey has to overcome its fear of the dragon's power. There could also be themes of friendship or even an unlikely alliance, where they team up to face a common threat despite their differences.
Power is likely to be a common theme. The 'flame devil dragon king' is probably very powerful, and the fanfic might explore how it uses or abuses that power.
One possible theme could be the clash of different cultures, that is, the dragon's own nature and culture (if it has one) against the cultures of Pandora. Another could be the power struggle. The dragon might be very powerful and disrupt the existing power balance.
A theme of transformation is likely. The earl, as he goes through the process of redemption, will probably transform from a flawed character to a more virtuous one. This could involve changes in his beliefs, values, and behavior. Another possible theme is the price of sin. He may have to pay a high price, whether it's in terms of relationships, status, or personal well - being, in order to be redeemed.
Another theme could be loyalty. Bardock might be loyal to the true potential of the Saiyan race while King Vegeta is loyal to the existing power structure. This difference in loyalty can create a great conflict in the fanfic. Also, there could be a theme of social change. As Bardock may represent the underclass Saiyans who want a change, and King Vegeta is the symbol of the old regime.
One great work could be 'The Dragon King's Redemption Quest'. It shows the dragon king's journey of self - discovery and redemption in a very engaging way. The author does a wonderful job of creating a vivid fantasy world for the story to unfold in.
Another theme is atonement. Anakin tries to make up for the bad things he has done. This can be through protecting the galaxy from new threats or helping to rebuild the Jedi Order. In some fanfics, he'll train new Jedi as a way of redeeming himself for his past destruction of the Order.