Issei would probably be both scared and excited. He's used to dealing with powerful beings, but the Ghost Rider is on a whole different level. He might initially try to fight him out of bravado, but soon realize he's outmatched. Rias would be more cautious. She would see the Ghost Rider as a potential threat to her peerage and would try to figure out his motives before taking any action.
One great Highschool DxD and Ghost Rider fanfiction is 'The Devil's Rider'. It combines the supernatural elements of both universes really well. The main character, who has traits of both a Devil from Highschool DxD and Ghost Rider, goes on exciting adventures fighting various demons and devils. It's full of action -packed scenes and some interesting character interactions.
Ron would likely be more on the scared side at first. He'd be hesitant to get too close to the Ghost Rider, but as he saw the Ghost Rider using his power to fight against dark forces, he might start to respect him. Ron would probably crack some jokes along the way to ease the tension, like comparing the Ghost Rider's flaming head to a really over - the - top Weasley's Wizard Wheezes product.
The clash of personalities. Highschool DxD characters are often flirty, power - hungry, or have their own personal agendas. Ghost Rider, on the other hand, is a force of vengeance. When they interact in fanfiction, it leads to some really interesting character dynamics. It can be like a devil trying to manipulate Ghost Rider for their own gain, but Ghost Rider's unwavering sense of justice won't allow it.
Well, the plot could involve a character from Highschool DxD making a deal that accidentally summons the Ghost Rider. The Rider then starts to hunt down evil in the Highschool DxD world, which includes some of the more malevolent devils and fallen angels. This would force the different factions in Highschool DxD to either side with the Ghost Rider or oppose him. And the main character of Highschool DxD might be caught in the middle, trying to figure out how to deal with this new and extremely powerful entity.
Perhaps the story could revolve around a conflict between the Ghost Rider's sense of justice and the more complex moral and power dynamics in the High School DxD universe. For example, he might not agree with how the devils in the school operate, and this could lead to a series of confrontations and alliances as he tries to find his place within the school while still adhering to his own code.
It could be a powerful devil who sees the Ghost Rider as a threat to his plans in the school. Maybe this devil wants to take over the school or gain more power among the students, and the Ghost Rider's presence and his sense of justice stand in the way.
The Death Eaters would likely be both scared and intrigued. They might see the Ghost Rider as a potential new weapon or a threat to their own dark plans. Voldemort himself would probably view the Ghost Rider as a rival in terms of power. He might try to either destroy the Ghost Rider or subjugate him. The other wizards in the Ministry of Magic would probably panic and try to contain the situation without really understanding what they are dealing with.
The story of Ghost Rider involves a person who becomes possessed by a supernatural spirit and gains supernatural powers to seek vengeance against evil. It's a tale of redemption and justice in a dark and supernatural world.