One unique trait could be his hidden insecurities. Despite his overpowered strength, Saitama might secretly worry about being alone in his power level. He could feel like no one truly understands him. In fanfiction, this could lead to some interesting character development, like him trying to find a true equal or friend who can see past his strength.
His simplicity is another trait. Saitama's straightforward way of thinking and living can be explored. Fanfiction could show how this simplicity affects his interactions with more complex characters. For example, when dealing with villains who have elaborate plans, his simple 'punch to solve the problem' approach might cause confusion or unexpected reactions among them.
His sense of humor is also a great aspect. In fanfiction, his deadpan humor can be used in various situations. For instance, in a scenario where he is accidentally put in a formal hero meeting, his humorous and casual responses can create comical and tense moments at the same time. It can also be a way for him to defuse difficult situations with other heroes who might be a bit too full of themselves.
A plot where Saitama travels to different dimensions in the One Punch Man universe. He could encounter strange versions of himself or other heroes and villains, leading to humorous and action - packed situations.
One way is to delve deeper into his training. Maybe add more details about the hardships he faced during his intense training regimen. For example, he could have had to overcome various natural disasters that occurred while he was training in isolation, like surviving a volcanic eruption near his training area.
One way is to explore his life before he became a hero. Maybe he had a normal job and was constantly frustrated with the mundanity of it. This could have been the catalyst for his intense training.
If Saitama became a monster in fanfiction, his physical appearance would surely change drastically. His bald head, which is now a symbol of his simplicity and power, might take on a more menacing look. His eyes could turn red, and his muscles might bulge in an even more grotesque way. This transformation could also affect his relationships. Genos, for example, would be in a difficult position. He idolizes Saitama as his master, but if Saitama becomes a monster, Genos might have to fight him to protect the city.
One way is to introduce a personal conflict for Saitama. For example, he discovers that his extreme strength has unforeseen consequences for the world or for his relationships. This could lead him on a journey of self - discovery. He might have to make sacrifices or learn to control his power in a new way. This arc would show his growth as a character as he grapples with these new challenges.
Well, a lot of One Punch Man fanfictions about heroes seeing Saitama are really interesting. Some focus on their initial shock at his power. For example, Genos is always in awe of Saitama's strength in the original work, and in fanfictions, this can be explored even deeper, like how he tries to understand the source of that power.
The plot could involve Saitama teaching a group of new heroes how to face their fears. He would tell them about his own journey, starting as an ordinary guy who decided to become a hero just for fun. Saitama could teach them that no matter how strong the enemy is, one should not be afraid to take the first step. He might use his one - punch knockout strategy as a metaphor for facing difficulties head - on, even if it seems impossible at first.
One popular plotline is Tatsumaki trying to get Saitama to take things more seriously in battle. Since Saitama is so overpowered, Tatsumaki, with her strong sense of pride in her own abilities, might feel frustrated by Saitama's nonchalant attitude. Another plotline could be a team - up against a powerful new villain. The contrast between Saitama's simple yet extreme strength and Tatsumaki's more complex psychic powers would make for an interesting dynamic in combat.
One interesting fanfiction storyline could be that Genos discovers a prophecy that Saitama is going to lose his powers. Genos then goes on a mad quest to find a way to prevent this from happening. He visits all kinds of strange places and consults with various powerful beings. Another could be that there is a competition among heroes to see who can train the best new recruit, and Saitama and Genos enter together. They face off against other hero - trainer pairs in various challenges. Also, a story where Genos creates a virtual reality world for Saitama to experience different kinds of battles that he normally wouldn't encounter in the real world, just for Saitama's amusement.
One possible plot could be that in this fanfiction, an alternate dimension where Saitama is a cannibal. Maybe there's a virus that has infected him and turned his moral compass upside down. Writers might explore how the other heroes react to this new, terrifying Saitama. Do they try to cure him? Or do they see him as a threat and try to stop him by force?