Anakin and Obi - Wan could fit into a Marvel fanfic if they were part of a multiverse - spanning story. The Marvel universe already has concepts like the multiverse. They could be brought in as representatives of a different kind of power (the Force). Anakin's emotional and sometimes unpredictable nature could create interesting dynamics with the more stable Marvel heroes. Obi - Wan could act as a mediator between the two universes, using his knowledge of the Force and his diplomatic abilities to navigate the complex relationships in the Marvel world.
Well, it could be really chaotic. Maybe Anakin and Obi - Wan would be mistaken for new superhumans in the Marvel universe. Their lightsabers would be seen as some sort of high - tech weapons. They might end up getting involved in the Avengers' battles, either as allies or foes depending on how the story is written. Anakin's power could be compared to that of Scarlet Witch, and Obi - Wan's wisdom might be on par with Doctor Strange's.
One interesting plotline could be a battle that takes place in an alternate universe where Anakin and Obi - Wan have different allegiances from the start. Maybe Anakin is a Sith Lord right from the beginning and Obi - Wan has to face his former apprentice in a more cut - throat battle.
Well, Anakin is often very well - written. His internal conflict between the light and dark side can be explored in great detail. His complex relationship with Obi - Wan, from being a beloved apprentice to a bitter enemy, gives a lot of room for character development. Writers can show his journey from a hopeful Jedi to a conflicted individual on the verge of falling to the dark side.
Well, in a fanfic where Anakin beats Obi - wan, it might be due to Anakin's raw power potential finally being fully unleashed. Anakin had incredible Force abilities that were often held back by his internal conflicts. In this fanfic scenario, perhaps he overcame those conflicts in a different way, allowing him to focus all his power on the fight against Obi - wan. Also, external factors like the environment could play a role. If the battleground was more favorable to Anakin's fighting style, it could give him the upper hand.
To develop Anakin's character, start with his disillusionment with the Jedi. He believes they have failed him, so his turn to the dark side seems like a way to gain the power he thinks he needs. In the Mustafar part of the fanfic, he can be shown as more impulsive and less in control of his emotions. Obi - Wan, on the other hand, can be developed as a character who is still holding onto hope that Anakin can be redeemed, but is also ready to do what is necessary to protect the galaxy.
There's the theme of trust. In a lot of Anakin and Obi - Wan fanfic, their trust in each other is either strengthened or tested. Another theme is the idea of destiny. How Anakin's destiny as the Chosen One and Obi - Wan's role in it are explored. And the theme of sacrifice. Fanfics might show how they are willing to sacrifice for each other, which is a big part of their relationship.
In many fanfictions, Obi - Wan might use his deep knowledge of the Force. He could reach out to Anakin through a Force - bond, calming his inner turmoil and guiding him away from the dark side. For example, he might remind Anakin of their past together, their training, and the values they once held dear.
One possible plot could be that Anakin and Obi - Wan find a time - traveling device in the Jedi Temple. When they travel to the future, they are shocked to see the remnants of the Jedi Order. They meet new Force - sensitive individuals who have formed a resistance against a new dark side threat. Anakin, having redeemed himself in the past, uses his experience to train these new Force - users, while Obi - Wan tries to figure out how the Jedi Order fell so far and how to prevent it from happening again in this new future timeline.
Well, it could start with Anakin having a change in his mindset. He becomes more focused and determined to win against Obi - Wan. He studies Obi - Wan's every move and weakness. During the battle, he uses the environment to his advantage. For instance, he causes a landslide or some other natural disaster on the planet they are fighting on, which distracts Obi - Wan long enough for Anakin to strike the final blow.
One possible plot could be that Obi - Wan somehow gets transported to the Marvel universe. He meets Doctor Strange, who senses his strong connection to the Force. Together, they team up to fight against a new dark force that is threatening both the Jedi way and the safety of the Marvel universe.