One of the most interesting characters to include would be Orochimaru. His thirst for knowledge and immortality could lead to some really wild plot twists in a future time - travel fanfiction. Then there's Shikamaru. His intelligence could be used to strategize in a future full of new challenges. And Sakura. Her growth as a ninja and her relationship with Naruto and the others could bring a lot of depth to the story.
Issei himself is of course very interesting. His reactions to different time periods and how he uses his knowledge from the future can be really engaging. Then there's Rias. Her presence can add a layer of complexity, especially if she has different relationships with Issei in different timelines. Another interesting character could be Vali. His rivalry with Issei can take on new dimensions when time travel is involved, like competing in different historical battles or for the affections of a character in a different era.
Morgan could be an interesting addition. He might accidentally get caught up in Chuck's time - travel adventures. His comical nature could provide some light - hearted moments in an otherwise complex time - travel plot, like when he misunderstands the technology or customs of a different time.
I think Kiba and Akamaru would be really fun to include. Kiba's boisterous nature could create some comical moments during the wedding preparations or at the wedding itself. Akamaru could also be part of some cute interactions with Naruto and Fuu. Tsunade would also be an important character. As the Hokage, she could have some say in the marriage, or at least offer her wisdom and support to Naruto. And Rock Lee could be there, showing off his crazy training regime and giving Naruto some motivation for his new married life.
Definitely Naruto himself. His energetic and positive personality would bring a lot of life to the chat. And Sasuke too. His brooding nature would create some interesting contrasts.
Definitely Naruto himself. His energetic and determined personality would be really interesting to see in a gaming context. He would probably be the type to dive headfirst into any game - related challenges. Sasuke could also be great. His brooding nature and powerful skills would make him a formidable opponent or ally in a game - based story. And Kakashi, with his laid - back yet super - skilled self, could be like a mentor figure in the gaming world within the fanfiction.
Jiraiya would be an interesting character. His relationship with Naruto could be explored in a new light if Naruto travels back in time. Jiraiya could teach Naruto different things or Naruto could use his future knowledge to help Jiraiya in his missions.
Definitely Ben himself. His ability to transform into different aliens makes for interesting scenarios in different time periods. For example, in the past, he could transform into an alien that was thought to be a myth, causing all kinds of chaos or amazement.
One character that would be fascinating is Medivh. As a powerful mage with knowledge of time and magic, he could either be a helper or a hindrance to Anduin. He might know secrets about the time travel that Anduin is doing and use it to his own ends. Another interesting addition could be Illidan Stormrage. His complex relationship with power and his own past actions could make for some intense interactions with Anduin as he travels through time.
Rick is an obvious choice. His intelligence and knowledge of the multiverse can add a lot of depth to the time travel story. He could be the one helping Morty fix the problems caused by time travel, or he could be the cause of the problems in the first place. Another interesting character is Summer. She could get involved in Morty's time travel adventures, and her different perspective as Morty's sister can bring new elements to the story. Maybe she's jealous of Morty's time - traveling and tries to tag along.
I think Naruto and Kakashi would be very interesting characters to include. Naruto's raw power and ability to make friends easily could help bridge the gap between the two universes. Kakashi, with his Sharingan and vast combat experience, could analyze the fighting styles of the For Honor characters quickly. On the For Honor side, the Orochi would be fascinating. His quick and acrobatic fighting style could be compared and contrasted with the ninja's. And the Valkyrie, with her spear - based combat and female empowerment, could have some great interactions with the female ninja characters in Naruto.