There could be a storyline where the Marvel OC is a hero who has been brainwashed into believing Wonder Woman is a threat to the multiverse. Wonder Woman tries to reason with the OC at first, but when that fails, they engage in combat. As the fight progresses, the OC starts to break free from the brainwashing due to Wonder Woman's noble actions. Another interesting plot could be that the OC is a shapeshifter who takes on the forms of Wonder Woman's greatest enemies to try and psych her out during the battle. Wonder Woman has to rely on her instincts and her heart to see through the deception and defeat the OC.
A possible storyline is that the Marvel OC is a scientist who has created a device that can nullify superpowers. The OC believes Wonder Woman's powers are too dangerous and decides to use the device on her. Wonder Woman, of course, sees this as a threat and fights back. During the battle, the OC discovers that Wonder Woman's powers are more than just physical strength and magic, but also her unwavering will. Or perhaps the OC is a magical being from Marvel who mistakes Wonder Woman for an enemy due to a misunderstanding. Their battle then becomes a journey of discovery as they learn about each other's true natures.
Well, in a fanfic, the outcome can be whatever the writer wants it to be. But if we look at their typical power sets, Wonder Woman is incredibly strong, fast, and has her magical weapons. A Marvel OC would need some seriously OP (over - powered) abilities to stand a chance. For example, if the OC has the power to manipulate reality like Scarlet Witch, then it might be a different story. But if it's a more 'normal' Marvel - type character, Wonder Woman's combat experience and her array of powers would likely give her the edge.
Another might be an OC who is from a different background than the main crew, like a civilian scientist who was accidentally brought along. Their different perspective could create a lot of interesting interactions and story developments as they struggle to adapt to life on the Destiny and contribute to the mission.
One interesting storyline could be a team - up against a powerful new villain who is threatening both their worlds. They combine their unique powers, like Power Girl's super - strength and flight with Wonder Woman's combat skills and Lasso of Truth, to take on the baddie.
One idea could be that your OC has a unique power set, like the ability to manipulate time in small pockets. This would create an interesting dynamic against Wonder Woman's strength and speed. For example, the OC could slow down time around Wonder Woman to gain an advantage in a fight, but then Wonder Woman could use her combat skills to counter despite the time distortion.
The OC could be a young artist. They could be in the process of painting a mural in a city when they accidentally draw a portal that leads to Wonder Woman's realm. The artist's creativity and free - spirited nature might attract Wonder Woman, and they could start a relationship that results in a baby. The OC's artistic skills could also play a role in the story, like using art to defeat villains or communicate with the baby as it grows.
One of the main storylines often involves Wonder Woman's origin on Paradise Island. It shows how she was raised among the Amazons and trained to be a great warrior. Another common storyline is her battles against various villains from the DC Universe, like Ares who represents war and chaos.
One interesting storyline could be where Wonder Woman tries to rehabilitate Cheetah. She might use her wisdom and compassion to understand the root of Cheetah's villainy and attempt to bring out the good in her. For example, she could discover that Cheetah's transformation into a villain was due to a misunderstanding or a wrong done to her in the past.
A great fanfiction storyline could be set in an alternate universe where Hulk and Wonder Woman are in a relationship. This would explore how their different personalities and powers interact on a more personal level. For example, how does Wonder Woman deal with Hulk's occasional outbursts? And how does Hulk adapt to Wonder Woman's strong - willed and independent nature? It could be a story full of drama, action, and romance.
Well, it could be really interesting. Imagine Wonder Woman in the world of Westeros. She might use her super strength to compete in the tourneys, or she could use her lasso of truth to expose the lies of the scheming lords and ladies. Her Amazonian skills would surely make her a force to be reckoned with among the knights and warriors of the Seven Kingdoms.
One great storyline is her origin story, which tells of her being an Amazon princess, trained in combat on the hidden island of Themyscira. Another is her battles against Ares, the God of War, where she uses her wits and powers to overcome his evil plans.