Saitama would win. He has shown incredible strength with just one punch. His power seems limitless, and in a fanfiction scenario, his simplicity and raw power would likely overpower Jiren's more complex abilities.
One possible plot twist could be that Jiren discovers a way to nullify Saitama's strength. Maybe he finds some sort of energy - draining technique that weakens Saitama over time. Another could be that Saitama holds back for some reason, like he wants to see the full extent of Jiren's power, and in doing so, he gets into a real struggle.
In this fanfiction, Goku vs Jiren is likely to be an epic battle. Goku's power with the Universe's Watch might bring new and unexpected abilities. Jiren, on the other hand, is an extremely powerful opponent. The fight could involve intense energy blasts, high - speed combat, and strategic maneuvers. It might also explore the growth of Goku's character and his newfound power in relation to Jiren's unwavering strength.
One great fanfic could be 'Frieza's New Ally'. In this story, the male OC has unique powers that catch Frieza's attention. The OC starts as a reluctant partner to Frieza but gradually they form a complex relationship. It has some really exciting battle scenes where the OC's powers are put to the test against other DBZ characters.
One common theme is power struggle. Since Frieza is a powerful villain in DBZ, when a male OC is introduced, there's often a struggle for power or dominance. For example, the OC might have powers that rival Frieza's and they constantly test each other.
One concept could be an OC Frieza Race character who rebels against the tyrannical ways of Frieza. This character might have grown up seeing the cruelty of Frieza's rule and decides to use their powers for good. They could secretly help the oppressed races in the DBZ universe, like the Namekians or the Earthlings.
One good 'DBZ Frieza x OC fanfiction' could be where the OC is a powerful being from a far - off planet and catches Frieza's interest. The OC might have unique powers that Frieza wants to use for his own gain, leading to an interesting power struggle and relationship development. For example, the OC could have the ability to control time, and Frieza tries to force the OC to use it for his galactic conquests.
First, you need to create a well - developed OC. Decide on their appearance, personality, and backstory. For example, if your OC is a warrior, think about what made them become a warrior. Then, consider Frieza's character. He is power - hungry and cruel. Think about how your OC would interact with such a character. You could start with a scenario like the OC being captured by Frieza's forces.
A plotline could start with Frieza hearing about Broly's power and being jealous. He then devises a plan to ambush Broly. But Broly, being extremely perceptive in his own way, senses Frieza's approach and is ready for the fight. As the fight progresses, Frieza realizes that Broly is much stronger than he expected and has to use all his dirty tricks to try and win. Or perhaps the plotline could involve Broly being captured by Frieza's forces, and then Broly breaks free and goes on a rampage against Frieza and his minions.
One of the main themes is the clash of generations. Goten represents the new generation of Saiyans while Frieza is from an older, more menacing era. This creates an interesting dynamic. Survival is also often a theme, as Goten has to fight to survive against Frieza's brutal attacks. Additionally, the theme of justice can be seen, where Goten is fighting for what he believes is right against Frieza's tyranny.