There could be Naruto. Since he and Sasuke have a strong connection in the original series, he might also be involved in the gamer fanfiction, maybe as a rival or teammate in the gaming world.
It's also possible that there are original characters created specifically for this fanfiction. They could be other gamers that Sasuke meets and interacts with. These new characters might bring fresh dynamics to the story, like having unique gaming abilities that either complement or challenge Sasuke's own skills.
It could be a girl named Sakura. She might be a sweet and determined student who catches Sasuke's eye.
Sakura is often quite popular. In college fanfiction, she might be a brilliant medical student, still having her feelings for Sasuke while also becoming good friends with Naruto. Her strong - willed nature and intelligence can add a lot to the story.
Naruto is often a popular character in these fanfictions. He could be Sasuke's rival for Sakura's attention or a good friend who tries to help them get together. Ino is also a common character. She might be Sakura's friend or sometimes a rival in matters related to Sasuke. Kakashi could be their teacher who gives them advice about their relationships and schoolwork.
Kakashi Hatake is a popular choice. He has a long history with both Naruto and Sasuke, having trained them. He could be included to offer guidance or add some comedic moments. For example, he could give them some tough training exercises that help them bond more. Another popular character is Sakura Haruno. She has her own complex relationship with both Naruto and Sasuke. Her presence can add some drama, like if she has to choose between helping Naruto or Sasuke in a difficult situation.
I think Kakashi could be really popular. Since he has a connection to both Sasuke and Naruto, his role in a time - travel story could be very interesting. He might be able to help them adjust to the past or use their knowledge to his advantage. Another popular character could be Itachi. His actions in the past are so crucial to the story, and in a time - travel scenario, he could interact with Sasuke in a whole new way.
Shikamaru might be included as well. He could be involved in strategic planning for the wedding security or just be there as a friend to both Sasuke and Sakura. And Tsunade, as Sakura's mentor, might be present at the wedding, giving her blessings and sharing some words of wisdom about married life.
Sakura is a very popular character to include. She has a long - standing relationship with both Naruto and Sasuke. Her medical ninjutsu skills can be very useful in various plot situations. Kakashi is also popular. His experience and unique jutsu can add depth to the story. Another popular character is Shikamaru. His intelligence can be a great asset in devising strategies against enemies.
Gaara is a character that can be well - written in this context. He has his own experiences with darkness and redemption. He might understand Naruto's possible fall into evil in a different way compared to others. He could offer his unique perspective to Sasuke on how to deal with Naruto. Also, Tsunade could be important. As the Hokage, she has to make difficult decisions regarding the threat that an evil Naruto poses to the village and how to support Sasuke in his efforts to stop Naruto without causing too much destruction.
In fanfiction, Sasuke's gamer ability often makes him an overpowered character. For example, he can quickly analyze battle situations like in a game, predicting his opponents' moves accurately. This ability might be related to his natural intelligence and combat skills, enhanced by the 'gamer' aspect which gives him a more strategic approach to fighting.
Kakashi is often a popular character. He has a lot of knowledge and skills, and his presence can add an interesting dynamic. He might be the one to discover Naruto and Sasuke's time - traveling secret and help them navigate the changes they're trying to make. Another one could be Sakura. She might be involved in different ways, like trying to figure out why Naruto and Sasuke are acting so differently due to their time - traveling knowledge.