One common theme could be mystery. Given the nature of the characters, there might be elements of an unknown backstory or a hidden connection between them that the fanfic explores. Another theme could be redemption, perhaps the purple guy trying to make up for his actions in relation to the puppet.
Common themes in 'purple guy x puppet fanfic' can vary widely. There could be themes related to the psychological aspects of the characters. Maybe the purple guy's motives are deeply explored, and how the puppet responds to that on an emotional and psychological level. Another theme could be the idea of fate or destiny, like they are somehow fated to be together in this strange relationship. Additionally, themes of transformation or change might be present, where either character undergoes a significant change throughout the course of the story.
In these types of fanfics, power dynamics can be a common theme. The Purple Guy might have a certain power or influence, and how that interacts with Mike Lemon's character is explored. There could also be themes related to secrecy. Their relationship might be something that needs to be kept hidden for various reasons. Additionally, themes of transformation might be present. Maybe through their relationship, one or both of the characters change in some fundamental way, either in terms of their personality, beliefs, or actions.
A theme could be about overcoming differences despite their similar appearance. Just because they are both purple doesn't mean they have the same personalities or goals. So, the fanfic could focus on how they learn to work together or fall in love in spite of their internal differences. Another theme might be a mystery - like they are the only purple - colored beings in a world and they need to figure out why and what their purpose is, and their relationship develops during this journey of discovery.
I'm not sure about specific 'purple guy x puppet fanfic' stories as it's a rather niche and often fan - created content. You could try searching on fan - fiction platforms like Archive of Our Own. They might have some works related to this pairing if it exists within the relevant fandom.
One common theme could be mystery. Since Purple Guy is often associated with dark secrets in the FNAF universe, and the Marionette has its own enigma. Another theme might be redemption. Maybe in the fanfic, Purple Guy tries to make up for his wrongdoings through his relationship with the Marionette. And also, horror is likely to be a theme as the original FNAF games are horror - based, and the presence of these two characters can create a spooky atmosphere.
One common theme is mystery. Since Purple Guy often has a mysterious backstory, fanfictions may explore the reader trying to uncover his secrets. Another is danger. Given his potentially menacing nature, there could be a sense of thrill and danger in the relationship. Redemption might also be a theme, where the reader tries to redeem the Purple Guy from his dark ways.
One common theme could be friendship or an unlikely alliance. Given the nature of the characters in the FNAF universe, they might be forced to work together against a common threat.
One common theme is friendship. Despite their spooky nature, many fanfics explore a deep and meaningful friendship between the puppet and Golden Freddy. Another theme is mystery. Their origins and the secrets of the world they're in are often a big part of the story.
Survival is also a key theme. The prehistoric setting means that the characters, both the reader and the Croods guy, have to constantly fight for survival. They need to find food, shelter, and protect themselves from the many threats around them. This theme often drives the plot forward, as the characters make decisions based on their need to survive. And in the process of surviving together, their relationship deepens, which ties in with the relationship - building theme.
One common theme is mystery. Since both puppets have their own enigmatic qualities in the FNAF world, fanfictions often play on that mystery, like uncovering their pasts or hidden powers.
It depends on the specific fandom. In some fandoms, a 'purple guy' and 'purple girl' concept might be unique and not widely known, so not a mainstream popular genre. However, in certain niche or creative communities, it could potentially gain some popularity if the story is well - crafted.