Well, in 'z nation oc fanfiction', you can find stories where original characters form their own groups and have unique survival strategies. They might team up with some of the known characters from the series in unexpected ways. One story could be about an OC who is a master of disguise and uses this skill to infiltrate zombie - infested areas to gather supplies.
Popular OCs in 'z nation oc fanfiction' can vary widely. Some are created to have special abilities related to the zombie virus itself. For instance, there could be an OC who has an immunity to the virus but at a cost - they can sense when zombies are near in a very intense and sometimes painful way. This makes for interesting storylines as they struggle with this 'gift' and use it to help their group survive. Also, characters with unique backstories, like an ex - circus performer who uses their acrobatic skills to evade zombies, are often well - liked in the fanfiction community.
Another idea for a fanfiction involving 10K in Z Nation is a time - travel scenario. What if 10K somehow got sent back in time to before the zombie outbreak? He could use his knowledge of the future to try and prevent the apocalypse, or at least change some things to make survival easier for everyone.
One idea could be a crossover where Naruto characters end up in the Z Nation world. For example, Naruto with his shadow clone jutsu could be really useful against the zombies. He could send out clones to distract the zombies while the group tries to find a safe place.
Well, 'The Lone Survivor in Z Nation' is a popular one too. It tells the story of a single person who manages to outwit the zombies and other dangerous groups all by themselves. The way the author describes the survival tactics is really engaging.
Survival is a very common theme. Since it's set in the Z Nation world, characters like 10k are constantly fighting for their lives against zombies. Another theme is friendship, like the bond between 10k and his comrades. They rely on each other to get through tough situations.
In a fanfiction, 10K might get separated from his group. He then has to survive on his own in a very hostile environment filled with not only zombies but also other dangerous humans. During this time, he could learn new survival skills and also face some of his inner demons. He might even meet some new allies along the way who help him reunite with his group.