There might be a fanfiction where a US soldier, after being injured in combat, wakes up in the RWBY world. He initially struggles to adapt but then realizes his combat skills can be useful. He could start training the RWBY students in new combat techniques. This could lead to some great character relationships, like a bond with Ruby as she is always eager to learn new ways to fight. The story could also explore how the US soldier's presence affects the balance of power in the RWBY world.
One great example could be those that explore crossovers where the Autobots and the characters from RWBY team up to fight a common enemy. For instance, a story might have Optimus Prime and Ruby Rose leading their respective groups in a battle against a powerful new Grimm that has been enhanced by Cybertronian technology.
A great Naruto - The Last of Us fanfiction is one where Naruto's healing abilities are used to find a cure in the world of The Last of Us. Since Naruto has the ability to heal himself and others to an extent, it could be a major plot point in the fanfic. Writers might also create a scenario where the Infected in The Last of Us are somehow affected by chakra, and Naruto has to figure out how to use this to his advantage. Maybe his rasengan could be used to destroy a large group of infected at once.
One great example could be a story where Soldier 76 takes D.Va under his wing as a mentor. He could teach her some of his combat strategies and how to be more efficient in the battlefield. This would be an interesting dynamic as they come from different generations and combat styles.
One example could be a fanfic where the team is stuck in a cold, desolate area during a mission. Ruby and Weiss start cuddling first out of necessity for warmth, and then the others join in. Their different personalities add an interesting dynamic to the cuddling scene.
One good example could be a fanfiction where the OC brother has a unique weapon design. For instance, he might have a sword that can transform into a shield. This adds an interesting dynamic to the story as he has to learn to master both offensive and defensive capabilities. Another example could be a fanfic where the OC brother has a special Semblance. Maybe his Semblance allows him to control time in a small area, which he uses to outwit opponents in battles. A third example could be a story where the OC brother is from a different kingdom than the main RWBY characters and has to adjust to the new environment while also dealing with his own personal quests.
In a fanfiction, the two universes' technologies could combine in terms of communication. The US soldier could introduce more advanced radio or communication devices. These could be used to better coordinate the huntsmen and huntresses in RWBY. Also, the soldier's knowledge of military engineering could be used to build stronger fortifications in RWBY settlements. This would help in defending against Grimm attacks. The soldier could also work on improving the airship technology in RWBY using some of the engineering concepts from the US military.
Well, in RWBY fanfiction, what defines us often depends on how we handle challenges. It might be our bravery in the face of danger, our loyalty to friends, or our determination to achieve our goals. These aspects shape our characters and define who we are within the fanfiction world.
The RWBY characters have very acrobatic and weapon - based fighting styles. For example, Ruby's Crescent Rose is a scythe that can also transform into a sniper rifle. The US soldiers, on the other hand, rely more on firearms and military formations. In a fanfiction, they could combine these styles by having the RWBY characters use their mobility to get close to enemies and then the soldiers providing covering fire. Or, the soldiers could learn from the RWBY characters how to use their weapons in more creative ways, like using a rifle butt as a melee weapon similar to how the RWBY characters use their weapons for both long - range and close - combat situations.
One good example could be a story where Qrow stumbles into a diner where the waitress works. She initially mistakes him for a regular drunk, but as the story progresses, she realizes there's more to him. Maybe she helps him when he's injured after a Grimm encounter near the diner.
There are quite a few out there. 'The German Soldier's Role in RWBY' is an interesting one. It delves into how a German - styled soldier might interact with the RWBY characters. It shows his combat skills and how they compare to the Huntsmen and Huntresses. It also has some great character development as he learns about the different cultures in RWBY.