One interesting RWBY Samurai fanfiction could be about a samurai - inspired character joining Team RWBY on their adventures. This would add a new dynamic to the group, with the samurai's code of honor influencing the team's decisions.
They can be combined by having crossovers of characters. For instance, a RWBY character like Weiss could train with a samurai master in the Last Samurai world. This would bring out new aspects of Weiss's character as she learns discipline and new sword - fighting techniques.
You can try fanfiction websites like Archive of Our Own (AO3). It has a large collection of RWBY fanfictions, and you can use the search function to specifically look for ones related to samurai. Just type in 'RWBY Samurai' in the search bar and browse through the results.
There could be a fanfiction where the Grimm from RWBY are somehow involved in the world of The Last Samurai. Maybe the samurai have to face these new and terrifying creatures. The RWBY characters could come to help, teaching the samurai about Dust and how it can be used to fight the Grimm. This would create an interesting mix of two different universes.
One idea could be a crossover where the characters from RWBY and Samurai Jack team up to fight a common enemy. Maybe a powerful Grimm has somehow made its way into Jack's world, and he needs the help of Ruby and her team to defeat it.
One interesting crossover could be the unique fighting styles. Samurai Jack's precise and traditional swordsmanship could be combined with RWBY characters' more acrobatic and Dust - enhanced combat. For example, Ruby's scythe - wielding speed might be paired with Jack's strategic strikes.
Often, Tumblr also has fanfic communities where people might share or recommend RWBY Samurai Jack crossovers. You can search relevant tags and see if any users have posted links or reviews of good fanfics in this genre.
The art styles can blend in terms of character design. Some fanartists might take Jack's armor and katana design and give it a RWBY - like twist. They could add RWBY - style details like Dust crystals or make the armor more in line with the RWBY universe's technology. On the other hand, RWBY characters could be drawn with a more Samurai Jack - like simplicity in certain action scenes to emphasize their movement and power, similar to how Jack is often depicted in the original series.
Well, Ruby would probably be all wide - eyed and enthusiastic. She'd be into the creativity of the fanfiction, seeing it as a new world of adventure for Samurai Jack. Weiss might nitpick a bit about grammar and plot holes, but still be somewhat interested. Blake would be more into the deeper themes, like the struggle between good and evil that is often prominent in Samurai Jack. And Yang would be like 'Yeah, Jack! Kick some butt!' throughout the more action - filled parts of the fanfiction.
They might gain new perspectives. For example, they could see different interpretations of Jack's character, like a more vulnerable side that wasn't as explored in the original show. This could make them understand his struggles better.