Viewtiful Joe is a very action - oriented character. In a crossover with School DxD, his interactions with the characters would be quite dynamic. He would likely jump into battles to protect the students of Kuoh Academy without hesitation. His no - nonsense approach to fighting evil would inspire some of the characters in School DxD. For instance, Koneko might admire his physical combat skills and try to learn from him. At the same time, Joe would have to deal with the more complex relationships in School DxD, like the romantic interests and rivalries among the characters. This could lead to some humorous and also some tense moments as he tries to navigate this new world.
Joe would probably be very confused at first in the School DxD world. He's used to his own kind of battles, and suddenly being in a world full of devils, angels, and other mythical creatures would be a shock. He might be very cautious and try to figure out who the good guys and bad guys are. The devils in School DxD might be intrigued by Joe's powers and either try to recruit him or study him. The angels, on the other hand, might be more suspicious and see him as a potential threat at first.
One creative plot twist could be that Viewtiful Joe's VFX powers start to malfunction in the School DxD world. This could lead to all kinds of chaos as he tries to control his powers while dealing with the devils and other supernatural beings in School DxD. Another could be that the characters from School DxD gain some of Joe's powers temporarily and have to learn how to use them in their own battles, which would completely change their fighting styles.
Inklings from Splatoon could also be fun to include. The Inklings' ink - based attacks and their unique culture could add a new dimension to the story. They could team up with Joe to stop an enemy that is trying to cover both their worlds in some sort of dark, gooey substance. Joe would have to figure out how to work with the Inklings' different combat style.
Pit from Kid Icarus is very innocent and pure - hearted. He would be quite shocked by the more lust - driven characters in High School DxD like Issei at first. But over time, his positive attitude might influence Issei to be a bit more noble in his pursuits.
Ranma would probably be very confused at first when he enters the Highschool DxD world. He might be skeptical of the devils and angels. Issei, being a pervert, might be really interested in Ranma's female form. But Ranma would likely not tolerate Issei's behavior easily. Kuno from Ranma 1/2 might see the DxD characters as new rivals for Ranma's affections. And the female characters from DxD could be intrigued by Ranma's martial arts skills and his tough - yet sometimes clumsy - personality.
Some of Ben's more heroic aliens, like Upchuck, could have really funny interactions. Upchuck might accidentally eat some of the devil fruits or other magical items in the DxD world, causing all sorts of wacky effects. And the angels in DxD might be initially suspicious of Ben, thinking he's some kind of new unknown entity. But as they see him fight against common enemies, they could start to respect him. Ben, on the other hand, would find the whole concept of the different supernatural races in DxD fascinating and might want to learn more about their powers.
Ash would probably be curious about the devils and angels in High School DxD. He might try to befriend them with his friendly and innocent nature. The devils and angels, on the other hand, would be intrigued by Ash's Pokemon.
The Power Rangers, being used to a more action - oriented and team - based dynamic, would likely bring their sense of discipline and cooperation to the interactions. They might be initially confused by the more chaotic and hormonal nature of the High School DxD characters. The High School DxD characters, on the other hand, would be intrigued by the Rangers' powers and technology. Issei, for example, might be eager to learn about the Rangers' combat skills and see if he could incorporate them into his own fighting style.
How about a crossover with Sonic the Hedgehog? Picture this: Sonic is running through a strange new zone and accidentally enters Joe's world. They join forces to stop Dr. Eggman who has somehow teamed up with one of Joe's enemies. Sonic's speed and Joe's Viewtiful powers would create a really fast - paced and exciting story.
The interaction between Viewtiful Joe and Moka would be really interesting. Moka's vampire powers and Joe's 'viewtiful' abilities could create some really cool fight scenes. Also, their different personalities - Moka's shy - vampiric duality and Joe's confident heroism - would make for some great dialogue and character development moments.
The Fairy Tail characters are used to a world full of magic and guilds. When they enter the Highschool DxD world, they would bring their sense of camaraderie and loyalty. Characters like Erza would immediately assess the situation and try to find a way to protect her friends. In the DxD world, she might find some kindred spirits in the more honorable devils. Meanwhile, the Highschool DxD characters are used to a world of different species and complex power dynamics. They would be curious about the Fairy Tail magic. For instance, the magic items used in Fairy Tail could be very appealing to some of the DxD characters. There could be a lot of cultural exchange and some tense moments as they figure out how to co - exist and whether they can trust each other.