Another theme is adventure. Since Sonic is known for his speed and getting into adventures, fanfics often involve Sonic and Shade going on quests together, like finding ancient artifacts or saving a group of animals.
The themes of power and rivalry are quite prevalent. Metal Sonic is designed to be as powerful as Sonic, if not more so in some cases. So, the fanfic may focus on their power - based rivalry. They constantly compete in speed, strength, and agility. Additionally, the theme of technology vs. nature can come up. Sonic is a natural - born being, while Metal Sonic is a product of technology. This contrast can lead to interesting plot developments.
Another theme could be the idea of different worlds colliding. Sonic's world and Peach's world are quite different, and in these fanfics, exploring how these two worlds interact and how Sonic and Peach bridge the gap between them is quite interesting.
One common theme is the clash of different worlds. Sonic comes from a very different place than Equestria, so there's often the theme of him adjusting to this new, magical world. Another theme is friendship. Just like in the Sonic and My Little Pony series, the idea of Sonic making friends with the ponies is quite popular.
One common theme is adventure. Since Sonic is known for his speed and getting into adventures, fanfics often involve Sonic and Sally going on various quests together.
Power and self - discovery are also themes. Blaze may discover new powers or Sonic may learn something new about himself while interacting with Blaze. This can drive the plot forward as they grow and change throughout the story.
A common theme is the clash of different worlds. Since Sonic and Pokemon come from different universes, seeing how their worlds collide and interact is often explored. For example, the difference in technology between Sonic's world and the more natural - based Pokemon world.
One common theme is adventure. Sonic is known for his adventurous spirit, and when combined with Merlina's magical world, there are always new places to explore and challenges to overcome. Another theme is friendship or a deeper relationship. Since they are from different worlds, their connection is often explored, whether it's a simple friendship or something more.
Another theme is adventure. They are usually on some sort of quest or journey in these fanfics. It could be to save their world or to explore a new place. For example, in many fanfics, they might travel to different zones in Sonic's world to find a magical item. And this journey helps to develop their relationship further.
One common theme is the exploration of power levels. Since both Saitama and Sonic are extremely powerful in their own universes, fanfics often play with how their powers compare and interact. For example, they might have a friendly sparring match to test each other's limits.
Common themes often revolve around exploration. Since Sonic is constantly exploring new areas in his games, and Gamzee can be seen as a character who is also on a sort of journey in his own story. There's also the theme of power dynamics. Sonic has his super speed and other abilities, and Gamzee has his own set of skills or characteristics. How these interact and whether one overpowers the other or they find a balance can be a recurring theme. And of course, there's the theme of cultural clash, as they are from very different fictional universes.