Survival is also a big theme. Characters in the crossover fanfiction usually have to figure out how to survive in the presence of Annabelle, especially if they come from a world where they're not used to such malevolent supernatural forces.
Self - discovery is also a theme. Characters often go through a journey of understanding themselves better, especially in relation to their feelings for others. For example, Annabelle might discover new aspects of her personality as she falls in love. And this is often intertwined with the theme of love.
Overcoming obstacles is a prevalent theme. Whether it's dealing with other people's opinions or facing some sort of danger, Charlie and Annabelle in fanfiction usually have to work together to overcome these difficulties. Also, the theme of growing up together is quite common. As they face different situations, they also grow and mature in their relationship.
Love and romance might also be a popular theme. Writers could create stories where Annabelle has a romantic relationship with a character, whether it's a canon character or an original one created for the fanfic. Also, self - discovery could be a theme, as she overcomes challenges and learns more about herself in the fan - created scenarios.
One common theme could be Annabelle's speed and her use of it in races or chases. Another might be her relationship with her owner or other animals.
One common theme is adventure. Since the Valerian universe is full of exciting and unknown elements, when crossed with other universes, it often leads to epic adventures. For example, a crossover with a space - opera like Star Trek could result in a story where Valerian and his companions explore new galaxies together with the Star Trek crew.
One common theme is the clash of different powers. For example, when the Incredibles cross with other superhero groups, there's always the exploration of how their powers compare and contrast.
Power struggle is a common theme. Starscream is often power - hungry in the original Transformers series, and in crossovers, this trait is magnified when he enters new universes with different power hierarchies. For example, in a crossover with the Lord of the Rings, he might try to claim the One Ring to gain ultimate power.
The theme of adaptation is quite prevalent. Asriel has to adapt to different cultures, technologies, and ways of life in the crossovers. For instance, if he enters a cyberpunk - themed world, he has to get used to the high - tech environment and the different social structures. Another common theme is the exploration of good and evil. When he crosses over to a world like the Lord of the Rings, he has to decide which side he's on and how to fight against the forces of evil in that world. This exploration of moral concepts is an important part of many Asriel crossover fanfictions.
A common theme is the clash of different assassin cultures. For example, when Hitman crosses with other assassin - themed franchises, their methods of killing, their code of ethics, and their loyalty to their respective organizations are often compared and contrasted.
One common theme is the exploration of power dynamics. When the X - Men cross over with other groups, like the Avengers or the Fantastic Four, there's always a comparison and contrast of their powers. For example, in a crossover with the Avengers, the mutants' powers might be seen as more unpredictable compared to the technology - based powers of some Avengers.