Character development is crucial. If you have a Shepard - like character from Mass Effect in the FNAF world, show how they adapt to the new and often terrifying environment. Do they keep their cool? How do they interact with the animatronics? On the other hand, if an animatronic ends up in the Mass Effect universe, how does it react to the different species and the vastness of space? You also need to keep the pacing right. Don't rush into the action but also don't spend too much time on exposition. Build up the tension gradually, especially when it comes to the creepy factor of the FNAF elements in the story.
Another concept is that the Reapers from Mass Effect are interested in the animatronics. They see the ability of the animatronics to keep 'coming back to life' in a sense as a useful trait. So they start to experiment on them, which causes all sorts of chaos as the animatronics' programming and the Reapers' technology clash.
You should also focus on the relationships. In Mass Effect, relationships between characters are crucial. If it's a human - Asari relationship in your fanfic, show how their different life spans and cultures affect it. And don't forget about the plot. A good plot can keep readers engaged. It could be a human trying to solve a mystery on an alien planet or something similar.
First, know the Mass Effect lore really well. You need to understand the species, their cultures, and the technology. Then, create interesting characters with their own motives and backstories. For example, a Turian soldier who has a secret mission.
To create a great 'Samara x OC' Mass Effect fanfic, you should also pay attention to the dialogue. Samara has a very formal and composed way of speaking. Your OC's dialogue should contrast or complement hers. For example, if the OC is more light - hearted, their conversations can be a mix of humor and seriousness. Also, think about the setting. You can use different locations in the Mass Effect universe, like the Citadel or a desolate planet. This can add variety to the story and also influence the relationship between Samara and the OC. The more you immerse the readers in the Mass Effect world, the better your fanfic will be.
Secondly, make sure his interactions with the existing Mass Effect characters are believable. He can't just fit in too easily. There should be some friction and growth in those relationships. Like, if he meets Shepard, there should be a dynamic where they both learn from each other.
First, know your Krogan lore. Understand their biology, culture, and history in the Mass Effect universe. This will make your OC more believable. For example, Krogan are known for their strength and battle - hardiness. Second, give your OC a unique backstory. Maybe they're an outcast in Krogan society or a hero with a secret past.
First, do your research on the Geth. Know their lore, how they function, and their place in the Mass Effect universe. For the OC, create a well - rounded character with a clear backstory and motivation. Make sure the OC's personality and goals interact in an interesting way with the Geth's nature.
Garfield might be a product of some strange experiment in the Mass Effect universe. He could have been created by Cerberus as an attempt to create a being with a carefree attitude in the face of danger. Instead of being a super - soldier like Shepard, Garfield is just there to enjoy life. But his presence starts to change the way the crew on the Normandy thinks about things. His simple pleasures, like napping and eating, could make the more battle - hardened crew members realize that there's more to life than just fighting the Reapers.
It adds depth to the characters. Fanfiction allows fans to explore different aspects of Shepard and Garrus' personalities that might not be fully explored in the game. It also keeps the fandom alive between game releases. People can keep engaging with the characters they love through these stories.
Yes, there are some interesting Hulk x Mass Effect fanfictions out there. You can start by looking on popular fanfiction websites like Archive of Our Own. Some fanfictions might explore unique crossovers, like how the Hulk's power would interact with the technology and alien species in the Mass Effect universe.