Anakin Skywalker is a common character. Since Obi - Wan and Anakin have a deep connection, in time travel scenarios, Anakin might be a key figure. Obi - Wan could try to influence Anakin's path in a different way.
Darth Vader also shows up. If Obi - Wan travels to a time when Anakin has already become Darth Vader, there could be intense confrontations or attempts at redemption. Their relationship is complex and full of potential in time travel fanfiction.
In a time - travel story, Obi - Wan's character would grow in his understanding of destiny and the Force. He may see events that were meant to happen no matter what he does, like Anakin's fall, which could make him more accepting yet still determined to fight for the light side. He could also develop a stronger sense of leadership as he has to navigate through different time periods and deal with various threats. He might have to lead other Jedi in different eras, which would force him to adapt his leadership style and become more versatile.
Obviously, Obi - Wan himself is the central character. His master, Qui - Gon Jinn, would likely be present, guiding him through his injury and recovery. Other Jedi Masters like Yoda might also show up to offer their wisdom. And then there could be his fellow Padawans, who could be there for support or even in some cases, a bit of friendly competition during his rehabilitation.
Goku is, without a doubt, the main character in these fanfictions. But other characters like Gohan and Goten can also be part of the story. Gohan might accompany Goku on his time - traveling adventures, or Goten could be a key factor in a future - related plot. Additionally, the Kais, especially the Supreme Kai, could be involved. They have knowledge about time and the universe, so they could play important roles in guiding Goku during his time travels.
Time travel would likely make Obi - Wan more self - reflective. Seeing different versions of events and his own actions from different time periods would force him to reevaluate his beliefs and decisions. For example, if he goes back to his training days, he might realize things he could have done differently to be a better Jedi.
All Might often appears. Since he was Izuku's mentor, in time travel scenarios, he might be the one Izuku turns to for advice or assistance. Another common character is Bakugo. Their complex relationship can be explored further in time travel stories, like if Izuku goes back in time, he might try to change how Bakugo treated him in the past.
Steve Rogers is often seen with Tony Stark in time travel fanfiction. Their relationship, which has its ups and downs in the original MCU, can be explored further in time - traveling scenarios. They might have to work together to fix a disrupted timeline.
Naruto is often a common character. Since Naruto has a strong bond with Kakashi, he might be involved in Kakashi's time - traveling adventures. Sasuke could also be there. Their relationship with Kakashi in the original story makes it likely for them to show up. And of course, Guy would be a great addition. His friendly rivalry with Kakashi would add some humor and action to the time - travel scenarios.
Kakashi could also be a common character. He is Iruka's colleague and they both play important roles in Naruto's life. In time travel scenarios, Kakashi might be involved in helping Iruka adjust to the time - shifted situation or they could work together on a mission that is affected by Iruka's time travel.
In Obi - Wan Kenobi crossover fanfiction, Qui - Gon Jinn is a common character to be paired with him. They could be in a crossover where they have to face a new and powerful enemy that requires both their skills and knowledge. Darth Vader (Anakin after his fall) is also often paired. This creates a very interesting dynamic as Obi - Wan has to deal with his former apprentice in a different context, perhaps in a world full of steampunk technology. Leia Organa can be paired with Obi - Wan too, where she learns more about her connection to the Force and her father from Obi - Wan in a crossover with a space - faring civilization different from the Star Wars galaxy.
One interesting concept could be Obi - Wan traveling back in time to prevent certain tragedies in the Star Wars universe. For example, he might try to stop Anakin's fall to the dark side. This would completely change the course of the story we know.