One idea could be inserting yourself as a character who has a unique skill like being a master tracker. You could help the group find food and supplies more easily. Another could be a character with medical knowledge who tries to prevent the spread of diseases within the group.
You could insert yourself as a character with a mysterious past that holds the key to a possible safe haven. Maybe you were part of a secret government experiment before the apocalypse that gives you an edge in this new world. You start off on your own but eventually cross paths with Rick's group and have to earn their trust while also revealing your secrets bit by bit.
A great plot idea would be to insert yourself as a character who is an expert in building fortifications. You join the group and use your skills to make their various camps and settlements much more secure against zombie hordes and raider attacks. This would not only change the safety aspect of the group but also their overall confidence in surviving in this post - apocalyptic world.
You could insert yourself as a human knight. Picture this: you are part of the Stormwind army, and you get involved in the fight against the orcs. During a battle, you find a mysterious artifact that gives you special abilities. This leads you on a quest to find out more about the artifact's origin and how it can be used to save humanity from various threats like the Scourge or the demons.
Your self - insert could be a transfer student from another kingdom with a completely different fighting style. This would lead to interesting interactions with the main characters as they learn from each other. They might introduce new weapons or combat techniques that the others haven't seen before.
A possible plot is that the self - inserted character has to deal with the Omnitrix malfunctioning. This could lead to unexpected and sometimes comical transformations. They might transform into a really weak alien in the middle of a battle or into an alien that is completely inappropriate for the situation, like a tiny alien when they need to be strong. As they try to fix the Omnitrix, they learn more about its inner workings.
One idea could be that Naruto and his friends are transported to the world of The Walking Dead. Naruto's ninja skills would be really useful in fighting the walkers. He could use his shadow clone jutsu to distract the walkers while the others look for supplies or a safe place to stay.
One idea could be exploring a side character's backstory more deeply. For example, the character of Carver. What made him so cruel? You could create a fanfiction that shows his life before the apocalypse and how those experiences shaped him into the tyrant he became in the game. Another plot could be about a group of survivors finding an untouched, pre - apocalypse bunker full of supplies but also some dark secrets that test their morality. A third idea is to have a fanfiction where a character from the game gets bitten but instead of turning immediately, they seem to develop some sort of immunity and the group has to decide what to do with them.
Maybe Bella is a scientist before the apocalypse and she tries to find a cure using the resources available in the post - apocalyptic world. She could be constantly searching for a way to end the walker threat.
A great plot for 'Walking Dead Game' fanfiction could be a character who has the ability to communicate with walkers in a limited way. They use this ability to try and find a cure or at least a new way to co - exist. This would lead to a lot of moral dilemmas within the group as some might see it as a betrayal while others see it as a chance for survival. The story could explore how this character's actions affect the group dynamics and their relationships with other survivor communities.
One idea could be that Harry Potter, through some magical mishap, ends up in the world of The Walking Dead. He uses his magic to protect a group of survivors from the walkers. Maybe he creates protective charms around their camp or uses the levitation spell to move heavy objects to block the walkers' paths.
One idea could be the character being reborn as a zombie with some retained human consciousness. They could then try to find a way to reverse the zombie state while also facing the challenges of other zombies and survivors. Another could be reborn as a survivor in a different part of the world shown in The Walking Dead universe, like a hidden island where they have to figure out new survival strategies.
One idea could be that Hela, as the self - inserted character, tries to reform the Avengers from within. She could use her unique powers and knowledge of Asgardian lore to help them face a new, powerful enemy. Maybe she starts off as a suspicious figure but gradually gains their trust through her heroic deeds.