To create unique characters, consider their backstories. Maybe an avatar character was once a human who was experimented on by a rogue devil scientist. This experience gave them their avatar - like powers, but also left them with a distrust of devils. This backstory would then influence their interactions with the other characters in the High School DxD world, creating a character that is both complex and unique.
You can start by combining the traits of different avatars and High School DxD characters. For instance, take the loyalty of a certain devil character and mix it with the free - spirited nature of an avatar from a water - based realm.
Think about giving the characters unique powers that are a blend of avatar and High School DxD abilities. For example, a character could have the power of flight like some devils in High School DxD, but also the ability to control time, which is more of an avatar - like power. Then, build their personality around how they use and view these powers. If they have a powerful ability like time control, they might be more cautious or they could be more reckless, thinking they can fix any mistakes.
Think about the backstories. A character could be a half - breed, born from a Nasuverse mage and a Highschool DxD devil. Their upbringing in two different worlds would shape their personality and abilities in a very unique way. They might struggle with their identity, which could be a great source of character development.
You can combine the traits of characters from both series. For example, a character could have the Sharingan from Naruto and the wings of a devil from Highschool DxD. This would give them a very distinct look and set of abilities.
You can give the character a unique backstory related to the Juggernaut Drive. For instance, if they were an experiment gone wrong and that's how they got the power. This would make them stand out.
You can give the character a distinct personality trait. For example, if the Highschool DxD world is full of bold and brash characters, make the future brother - in - law more reserved and calculating. This contrast will make him stand out.
To create engaging characters, you can start by combining the traits of characters from both series. For example, take the boldness of a Highschool DxD character and mix it with the magical finesse of a Trinity Seven character. This creates a unique blend that readers will find interesting.
You can make your dragon OC very curious. Since dragons are often depicted as powerful and knowledgeable, a curious dragon would be interested in exploring new things in the 'Highschool DxD' world, like the different magic spells and the social hierarchies. This would lead it to interact with various characters and get into all sorts of situations.
First, think about her appearance. She could have unique hair color like silver or pastel pink. For her personality, make her a bit of a tsundere. She acts tough on the outside but is actually really kind-hearted. Also, give her a special ability like the power to manipulate shadows. This will make her stand out among the other characters in the 'Highschool DxD' universe.
Start with a backstory. A character from the Templar Order might have a family history of serving the Order, which shapes their motives and actions. In Highschool DxD, a character could have a past event that led to their current position or power. Develop relationships. A Templar might form an unlikely friendship with a devil in Highschool DxD, which challenges their beliefs. Through these relationships, the character can grow and become more believable.
Give each character in the harem a distinct personality. For example, one could be the shy and reserved type, while another is bold and outspoken. Their personalities should be consistent throughout the story. Also, consider their backstories. If a character has had a difficult past, it will shape their actions and reactions in the present.