Common themes include trust - building. Since they come from different backgrounds, in fanfics, they have to learn to trust each other. Another is the exploration of their individual traumas. Snake and Raiden both have their own past traumas, and fanfics often explore how they deal with these while supporting each other. And of course, adventure. They go on various adventures together, facing new challenges and enemies.
Well, teamwork is a big theme. They are both skilled fighters, and in fanfics, they combine their abilities to take on powerful enemies. Also, redemption can be a theme. For example, if Raiden has made mistakes in the past, Snake might help him find a path to redemption. There's also the theme of mutual respect. Despite their differences, they come to respect each other's strengths in many fanfics.
One common theme is the exploration of their different fighting styles. Since Snake is more of a traditional soldier and Raiden has his own unique cyborg - like combat abilities, fanfictions often show how they combine their skills to overcome challenges.
One common theme could be the exploration of their relationship in a more intimate and emotional way. Maybe the fanfiction focuses on how they understand and support each other on a deeper level.
One common theme is trust. Since Snake and Emma are likely from different backgrounds in the fanfic world, they need to build trust. For example, in many stories, Snake initially doubts Emma's intentions but as the story progresses, they learn to trust each other.
A common theme is the clash and then the fusion of their different worlds. Samus comes from a world of space exploration and alien battles, while Snake is from a world of military espionage and political intrigue. Their stories often involve them finding common ground.
The theme of protection also pops up a lot. The snake might protect the human from other threats in their environment, or the human might protect the snake from those who fear it. This creates a bond between them that is based on mutual trust and reliance, which is a central part of many 'human x snake fanfic' stories.
One popular Snake x Raiden fanfic is 'Bond Beyond Battlefields'. It delves into their complex relationship in a post - war scenario, exploring how they rely on each other for emotional support. Another great one is 'Partners in Shadows' which focuses on their covert missions together and how their trust in each other deepens during those dangerous operations.
One common theme could be the exploration of an unusual relationship dynamic. Since it involves an anthro snake, there might be themes related to the snake's unique characteristics, like its slithering movement or its cold - blooded nature affecting the relationship with the female character.
A major theme is also the exploration of Goku's character. How he reacts to the advances and the world of Princess Snake shows a different side of him. Often, there's the theme of transformation. Maybe Princess Snake tries to change Goku in some ways, or Goku tries to change her view of the world. And of course, adventure is a big part of it as they usually embark on some sort of journey together.
Survival is also a prevalent theme. Given the nature of the Metal Gear universe, fanfics might depict Quiet and Venom Snake relying on each other to survive in hostile environments, whether it's facing enemy forces or the harsh natural elements. They may have to work together to overcome various challenges, which in turn deepens their bond. And sometimes, there could be a theme of sacrifice, where either Quiet or Venom Snake is willing to put themselves in danger for the other's sake.
One popular theme is friendship development. Fanfics often show how Yae Miko and Raiden Shogun grow closer over time, starting from a more formal or distant relationship. Another theme is power dynamics. Given their different positions of power, exploring how they interact and influence each other in terms of power is quite common.