The Nameless King's powers might be related to the Aura in RWBY. Maybe his power is so strong that it can disrupt or even manipulate the Aura of others. He could use this to his advantage in battles, either weakening his opponents' defenses or enhancing his own attacks. His signature attacks could be re - imagined as Aura - based strikes that are more in line with the RWBY universe's combat mechanics.
His powers could be adapted to fit the Dust - based magic system in RWBY. For example, instead of his normal fire - based attacks, he could use Dust - enhanced fire that has different properties like being able to burn through Grimm - resistant materials. His flight ability could be enhanced by some sort of wind Dust, allowing him to move even faster and more gracefully in the air.
Naruto's chakra control could be a key factor. He might be able to use his chakra to form a sort of bond or leash on the necromorphs, similar to how he can control his shadow clones. His ability to sense and manipulate chakra could also allow him to understand the 'energy' or 'life force' within the necromorphs and use that knowledge to control them.
Perhaps the Nameless King has lost his memory upon arriving in RWBY's world. He wanders around, confused, and is found by Ruby. Ruby, being the kind - hearted leader, decides to help him. As he regains his memories bit by bit, he discovers a connection between his past and a hidden power in Remnant that could change the fate of both worlds.
In a Star Wars fanfic, Spiderman's powers would need to fit into the existing lore. His web - shooting could be related to some ancient technology that was long forgotten in the Star Wars universe. It could be something that was once used by an extinct species. His spider - sense might be a result of his exposure to a strange energy field in the Star Wars galaxy. This energy field could enhance his natural abilities. And his climbing ability could be used in the many different terrains of Star Wars planets, from the sandy dunes of Tatooine to the ice - covered landscapes of Hoth.
Weiss's glyphs could be used for various strategic purposes. For example, creating barriers to protect troops or platforms for better vantage points. Blake's shadow clones could be used for deception in combat situations, confusing the enemy. Yang's strength could be utilized in direct combat, like taking on tanks or other heavy machinery. In a WWII fanfic, their powers would add a unique and fantastical element to the historical setting.
His invisibility power would be extremely useful for stealth missions in RWBY. He could easily sneak up on Grimm or gather intelligence without being detected.
Well, Naruto's chakra could be translated into a form of spiritual energy in the Bleach universe. His ability to create shadow clones might be similar to some low - level Hollow cloning abilities. As for Sasuke, his Sharingan could be a unique type of spiritual vision. Maybe it could detect hidden spiritual pressures or weaknesses in enemies. They would have to adapt to the different power systems in Bleach, like learning about Zanpakuto and the various forms of Hollowfication and Soul Reaper powers.
Naruto's powers would need to be adjusted to fit the AoT setting. His chakra - based attacks could be seen as a new form of energy in that world. His ability to run on walls like a ninja could be similar to the ODM gear users, but with his own unique style. Maybe his summoning jutsu could bring in some helpful creatures to fight the Titans.
Well, first of all, Naruto's ability to run on walls and trees using chakra could be translated into an enhanced agility ability in the Young Justice setting. His summoning jutsu could also be interesting. He could summon toads in the Young Justice world, which would be quite a strange and powerful addition. And his Sharingan - like ability to see the flow of chakra could be used to analyze the powers of meta - humans, helping the Young Justice team understand their enemies better.
He could have the power of telekinesis like Goodwitch. This would allow him to move objects with his mind, which would be useful in combat against Grimm. He might also be able to create force fields to protect himself and his allies.
His web - slinging would work great for mobility. He could swing between buildings in the RWBY cities or even use it to quickly move around in the forest areas. His super strength would help him in combat against the Grimm, allowing him to punch them hard or hold them back.