Lucina's combat skills and swordsmanship could be combined with Spiderman's acrobatic fighting style. They could perform coordinated attacks where Spiderman uses his speed and agility to distract enemies while Lucina strikes with her sword. Their combined power would be a formidable force against any foe.
Naruto's ninjutsu and Tonks' magic could create some really cool combinations. For instance, Naruto could use his Rasengan while Tonks uses her magic to enhance its power. Or Tonks could change into Naruto to distract enemies while the real Naruto attacks from a different angle.
Iron Fist's chi - powered punches could be enhanced by Spiderman's web - slinging. For example, Spiderman could web up an enemy and then Iron Fist could use his enhanced strength to send the webbed - up foe flying. Or Iron Fist could use his martial arts skills to direct Spiderman's movements during a fight, like using his chi to sense where Spiderman should swing next to avoid an attack.
Loki's illusions combined with Spider - Man's acrobatic skills would be a great combination. Spider - Man could move within Loki's illusions, confusing their enemies even more. And if Loki were to use his telekinesis to move objects, Spider - Man could use his webs to direct those objects towards their enemies. Also, Spider - Man's ability to stick to walls could be used in Loki's lairs or magical structures, allowing him to navigate them more easily while Loki uses his magic to deal with any traps or guards.
If the fallen angel has the ability to manipulate time or space on a small scale, Naruto could use this in his combat strategy. He could use his speed and the fallen angel's time - bending ability to move so fast that the enemy can't keep up. In terms of power combination, Naruto's Nine - Tails chakra could be merged with the fallen angel's dark or light energy (depending on her nature). This could result in a transformation that gives Naruto new abilities like wings made of chakra and light, allowing him to fly and attack with new types of energy - based attacks.
Their powers could combine in combat. Naruto's Rinnegan - based abilities like the ability to absorb or deflect attacks could be used to protect Yugito while she unleashes her Jinchuriki powers. For example, if she goes into her partial - tailed beast form, Naruto can use his Rinnegan to shield her from incoming attacks that she might not be able to dodge in that form.
Naruto's chakra control could be used to enhance Cheetara's own energy. She could channel Naruto's chakra into her attacks, making them more powerful. In return, Cheetara could use her agility to help Naruto dodge attacks more effectively while he is in the middle of using his more powerful jutsus.
Naruto's ability to use chakra could enhance Seras' vampire powers. For example, he could use his chakra control to help Seras better regulate her own energy, which might make her faster and stronger. Seras, on the other hand, could use her vampiric senses to help Naruto in combat. Her enhanced hearing and sight could detect hidden enemies that Naruto might miss with his normal senses.
Optimus Prime's strength and ability to transform could be combined with RWBY's unique semblances. For example, Ruby's speed semblance could be enhanced when she rides on Optimus in his vehicle form. Or Yang's strength semblance could be amplified when she teams up with Optimus in a fight, using his power as a boost.
Naruto's Rasengan could be charged with Pikachu's electricity, creating a super - powered attack. His shadow clones could also work in tandem with Pikachu. For example, the clones could surround an enemy while Pikachu zaps them from a safe distance within the clone circle.