Obviously, the main character would be the original character, the ice storm dragon. But there could also be characters like Issei Hyoudou. He might interact with the OC, either as an ally or an adversary. Another possible main character could be Rias Gremory, as she is a key figure in the Highschool DxD world and could have some sort of connection with the ice storm dragon OC.
For a 'highschool dxd oc ice storm dragon fanfic', the ice storm dragon OC would be central. Then, there could be antagonists like the fallen angels. Kokabiel, for instance, might target the OC because of its potential power. On the other hand, among the heroes, there could be Kiba Yuuto. He could team up with the OC to fight against common enemies. And perhaps there could be a mysterious teacher or mentor figure who helps the OC understand its powers and role in the Highschool DxD world.
The main characters could include the ice storm dragon OC, some of the devils from the Occult Research Club like Akeno Himejima. She might be intrigued by the OC's powers and try to get closer to it. Also, there could be an angel character, like Xenovia, who could see the OC as a threat to the balance between the different supernatural forces. And of course, the OC's friends or comrades within the ice storm dragon community (if there are any in the fic) could also be main characters.
Well, it could be about an original character (OC) who is an ice storm dragon in the Highschool DxD universe. Maybe the OC is trying to find its place among the various factions in the school. It could get involved in battles against other supernatural beings and form unexpected alliances.
Well, a great plot could involve a power struggle within the world of Highschool DxD related to the Ice Storm Dragon. For instance, different factions might be vying to control the power of the Ice Storm Dragon for their own purposes. The fanfic could focus on how the protagonist gets caught in the middle of this struggle and has to navigate through various challenges, including political intrigue and battles, to either protect the Ice Storm Dragon or prevent its power from being misused.
You can give the character a special connection to the Ice Storm Dragon. Maybe they were born during an Ice Storm Dragon's roar or something like that. This connection could give them unique powers related to ice or dragon - like abilities.
It could be an envious student who also discovers the 'gamer' aspect but uses it for evil. He might try to undermine the protagonist at every turn, seeing him as a threat to his own power - hungry goals.
Great Red is also a very popular dragon in Highschool DxD fanfiction. Given his mysterious and powerful nature, many fanfictions explore his potential influence on the main characters' lives and the overall plot of the story. His abilities are often expanded upon in these fan - created works.
I'm not sure specifically as it depends on the fanfic. But it could have a brave knight who is not afraid of the ice dragon at first sight. He might be on a quest related to the dragon.
A young girl who has always been fascinated by dragons could be a main character. She might be an outcast in school until she discovers her ability to communicate with dragons.
A futa version of Rias could be an interesting main character. She could have all of Rias's charm and leadership skills, but with the added element of her futa nature, which could lead to different power manifestations and relationship developments, especially with Issei.
Well, first there's Issei. He's the protagonist, a former human turned devil. Rias Gremory is really important. She's a powerful devil and kind of Issei's mentor in the devil world. Akeno is also a main character. She has a unique personality and is close to Rias. Kiba Yuuto, he's a skilled swordsman among the devils. And Xenovia is interesting too. She starts as an exorcist but then her path crosses with Issei and the others, which changes things for her.
Akeno Himejima is also a key character. She is one of Rias' peerage members and has a complex personality. Koneko Toujou, a cat - like devil, is part of the group as well. She has a strong fighting ability and an interesting backstory.