In this type of fanfic, the characters Vanny and Glitchtrap are central. The fanfic could be about their alliance, perhaps in causing chaos within the Freddy Fazbear's establishment. Vanny, being a follower of Glitchtrap, might be depicted as carrying out his devious plans, which could make for an interesting read as it delves into the psychological aspects of their relationship.
A 'glitchtrap x vanny fanfic' often explores a very dark and complex relationship within the FNAF universe. Glitchtrap is a rather menacing and manipulative character, and Vanny is his sort of 'accomplice'. In these fanfics, their interactions can range from him subtly influencing her actions to full - on domination of her will. It's a very interesting exploration of the power dynamics and the darker side of the FNAF lore.
The power imbalance. Glitchtrap has this sort of otherworldly and menacing power, while Vanny is more of a human (or at least a physical being in the game world). The contrast between their 'strengths' makes their relationship in the fanfic really captivating. It's like seeing how a small, perhaps vulnerable character gets caught up in the web of a much more powerful and devious entity.
One interesting plot could be Glitchtrap slowly influencing Vanny's actions in the virtual world and how she then starts to carry out his sinister plans in the real world. For example, he might manipulate her into setting up traps for the other characters in the game's setting.
Many fanfictions depict it as a somewhat symbiotic relationship. Vanny gets power and a sense of purpose from Glitchtrap, while Glitchtrap uses Vanny to achieve his goals in the game world. They depend on each other in a twisted way.
Definitely not a true story. FNAF is a work of fiction that takes place in a fictional world with its own set of rules and scenarios. It's all about creating a thrilling and immersive gaming and storytelling experience, not reflecting reality.