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.
Well, the characters in Highschool DxD have different personalities and motives, so their reactions would vary. The more hot - headed ones like Issei might jump into action without thinking, while the more calculating ones like Rias would assess the situation first. The fact that the Ghost Rider has such a unique and powerful presence would make everyone on edge. The fallen angels might see him as a competitor in their power struggles, while the normal students in the school would be terrified. And the various magical creatures in the Highschool DxD world would be confused about what this new, otherworldly being is and how it fits into their existing power dynamics.
Some of the devils in Highschool DxD might see the Ghost Rider as a new form of power to be harnessed. They could try to make deals with him, not fully understanding the consequences. The angels, on the other hand, might see him as a force of chaos that needs to be contained. Characters like Koneko would be very wary. She has a sense of self - preservation and would likely keep her distance until she knew more about the Ghost Rider. And Akeno might be curious about his powers and try to flirt with him to get closer and learn more, which could be a very dangerous move.
The presence of Ghost Rider in a Highschool DxD fanfiction would likely create a lot of chaos. His powers are far beyond what most characters in Highschool DxD are used to. He could easily become a major disruptor of the power balance. For example, his Penance Stare would be a huge threat to the devils and other supernatural beings in the Highschool DxD universe. His hellfire could also cause massive destruction. However, it could also lead to some interesting alliances. Maybe some of the good - natured characters in Highschool DxD would see him as an ally against the more malicious forces.
Issei would probably be the first to want to fight Thanos. He's always eager to prove himself and protect his friends. He might initially underestimate Thanos due to his own growing power and confidence, but soon realize how powerful Thanos really is. Rias would be more cautious. She would likely try to gather information about Thanos first and then formulate a plan to either fight or negotiate with him.
Issei, being the hot - blooded character he is, would probably be excited to meet someone as powerful as Naruto. He might challenge Naruto to a friendly spar at first, hoping to learn from him and test his own strength. And as he gets to know Naruto better, he could start to see him as a brother - in - arms, especially if they face common enemies together.
Rias would be devastated. Issei was not only her servant but also someone she had deep feelings for. She would likely go into a rage at first, vowing to find and punish whoever was responsible. Akeno would be heartbroken as well. She and Issei had a special bond, and she would be in mourning for a long time. Kiba might feel a sense of guilt, wondering if he could have done more to protect Issei. Asia would be in shock and constantly pray for Issei's soul, hoping for some kind of miracle.
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.
Lucy would be a bit scared at first. She's used to dealing with magical creatures within the Fairy Tail world, but Ghost Rider is something entirely different. However, her curiosity would soon get the better of her, and she'd start asking questions about his powers and origin. Happy would probably hide behind Natsu, peeking out nervously. As for Wendy, she might be in awe of Ghost Rider's power, but also concerned about the potential danger he poses to her friends.
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.
Ghost Rider's abilities would be a major factor in a Highschool DxD fanfiction. His immortality, for instance, is different from the ways characters in Highschool DxD achieve long - life or near - immortality. In Highschool DxD, it's often through magic or special bloodlines. Ghost Rider, on the other hand, is cursed with immortality. His speed is also something to consider. While there are fast characters in Highschool DxD, Ghost Rider's speed combined with his other abilities like his hellfire and chains would make him a formidable force. He could move through the Highschool DxD world with ease, leaving a trail of destruction or justice, depending on his purpose at the moment.
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.