Sephiroth's power is deeply rooted in his Jenova cells, which give him regeneration and other enhanced abilities. RWBY characters' powers are more about their individual Semblances and their use of weapons. In a crossover, Sephiroth's raw power could be a major threat. But RWBY characters like Yang with her strength - based Semblance that gets stronger with each hit could potentially hold their own against him. Also, characters like Pyrrha with her Polarity Semblance might be able to disrupt Sephiroth's attacks by manipulating the metal in his sword or armor.
Sephiroth is extremely powerful with his superhuman strength, speed, and his iconic Masamune sword. In comparison, RWBY characters have their own unique abilities. Ruby has her speed and Crescent Rose. But Sephiroth's overall power level might be higher initially. For instance, his ability to fly and use powerful magic attacks would be a big advantage.
In a fanfiction, Naruto characters' powers are based on chakra. For example, Naruto can create multiple clones and perform powerful jutsus. Compared to Overwatch, where heroes have guns and tech - based abilities like Tracer's time - jumping. In RWBY, characters have semblances which are unique powers. Naruto's powers are more in - line with RWBY's in terms of being an innate ability, but are more diverse in nature. While Overwatch powers are more about technology - based combat.
Ulquiorra has some extremely powerful abilities. His Cero attacks are very destructive. Compared to RWBY characters, his power level might be much higher in terms of raw energy output. For example, Ruby's scythe skills are more about speed and precision, while Ulquiorra can deal large - scale damage with his attacks.
Doomguy is known for his brute strength and his arsenal of powerful guns. In comparison, RWBY characters have more diverse abilities based on Dust and their Semblances. For example, Ruby has her speed - enhancing Semblance. Doomguy's guns would be a huge advantage in terms of raw firepower, but the RWBY characters' abilities offer more flexibility in combat.
Well, Ruby's speed semblance could be a great complement to Spiderman's acrobatics. They could perform some amazing parkour - like stunts together. Yang's semblance of getting stronger with each hit could be combined with Spiderman's strength. Imagine Yang taking a few hits and then teaming up with Spiderman for a super - powerful attack. And Weiss's ability to create glyphs could be used to enhance Spiderman's web - swinging. She could create glyphs that make the webs stronger or more elastic, allowing him to swing further and faster. Blake's stealth and acrobatic skills could also work well with Spiderman's, as they could both silently take out enemies from the shadows.
When it comes to power levels, Goku's Super Saiyan Blue form might be able to match up to Superman's full power. But Superman has the advantage of being able to fly in space without any issues, while Goku needs to hold his breath. Wonder Woman's combat skills are excellent, but they could be challenged by the martial arts expertise of the Z - fighters. And Martian Manhunter's telepathy and shape - shifting abilities would be a new kind of threat for the Dbz characters who are more used to straightforward physical battles.
Naruto would probably be very curious about Sephiroth. He'd likely try to be friendly at first, asking a lot of questions. Sephiroth, on the other hand, would be more aloof and might see Naruto as a nuisance or a potential threat. But as time goes on, Naruto's determination might start to intrigue Sephiroth.
Well, when the Avengers first encounter Sephiroth, they'd be quite surprised. Tony Stark would crack a joke to ease the tension a bit but still be very aware of the danger. Steve Rogers would stand tall and be the first to step forward, showing no fear. Thor would grip his hammer tightly, ready to defend. Bruce Banner would be worried that if Hulk gets involved, it could be a very chaotic battle. The female Avengers like Black Widow and Scarlet Witch would be sizing up Sephiroth, trying to find any chinks in his armor. They'd all be on high alert and start formulating a plan to either defeat or contain this unexpected and very powerful new arrival.
The gods in Warhammer 40k are on a whole different level of power. They can warp reality on a galactic scale. In Marvel, the Asgardian gods like Thor have great power, but it's not on the same scale as the Chaos Gods in Warhammer 40k. But if Thor were to face off against a daemon from Warhammer 40k, his lightning and strength might be enough to hold his own, especially if he had the help of some of his Marvel comrades and the technology and weaponry from Warhammer 40k.
Goku's power level is extremely high in Dragon Ball Z. In a crossover with Harry Potter, his ki powers would be far stronger than most wizards' magic in terms of raw destructive force. However, magic has a different kind of versatility. For example, a wizard could use Apparition to teleport, while Goku has to fly. Harry Potter, on the other hand, has the power of love and friendship which gives him an edge in some situations, but physically he is much weaker than Goku.
When it comes to comparing Ichigo's powers to the ninjas' in the Naruto world in a fanfiction context, it's complex. Ichigo has the power of Hollowfication which makes him extremely aggressive and powerful. The ninjas have their own unique kekkei genkai and jutsu. Ichigo's Shunpo is faster than most ninja movement techniques. But ninjas have the advantage of teamwork and strategic combat. For instance, a group of ninjas could use their combined jutsu to try and counter Ichigo. However, Ichigo's reiatsu, which is his spiritual pressure, could also disrupt ninja techniques. Overall, it would be a very interesting power dynamic.