The antagonist in the series can also be extremely interesting. They are the force that opposes the angels and usually have their own motives and goals. Their evil plans and the way they try to outwit the angels can add a lot of tension and excitement to the story. Maybe they have a tragic past that led them to become the villain, which makes their character more multi - dimensional.
The angel protagonist is really interesting. His struggle to uphold the values of heaven while dealing with the chaos of the human world makes him stand out.
Yuzuru Otonashi is really interesting. He's the protagonist who has lost his memories at first. His journey to regain his memories and find out his purpose in this afterlife is captivating. Another is Kanade Tachibana, the girl known as Angel. Her mysterious nature and her real identity that gets revealed slowly make her a very engaging character.
Definitely Castiel. Castiel has his own complex relationship with death and the divine in the Supernatural world. Pairing him with the Angel of Death would create a really interesting dynamic. They both have different views on mortality and the afterlife, which could lead to some great character interactions.
There are several. Percy, for sure. His ability to control water and his quick - wittedness make him stand out. Annabeth Chase is also very engaging. Her knowledge of architecture and her leadership skills are impressive. Also, Luke Castellan is an interesting character. His fall from grace and his complex motives add a lot of drama to the series.
The titular Lincoln Lawyer is quite interesting. His unique approach to law and his ability to think outside the box make him stand out. He has a certain charm that draws readers in.
John Carter himself is very interesting. His ability to adapt to the new world of Barsoom and his combat skills make him stand out. Dejah Thoris is also interesting. She is a strong and intelligent female character.
The Ice King could be really interesting. He's always up to something crazy, and his relationship with the guardian angel could be full of comical misunderstandings. Marceline the Vampire Queen is another character. Her dark past and her friendship with Finn and Jake can add depth to the fanfic when combined with the presence of the guardian angel. Plus, she has her own unique powers and personality that can create great storylines.
Geralt is definitely one of the most interesting characters. His unique profession as a Witcher, his skills in combat and magic, and his complex personality make him stand out. Yennefer is also very interesting. Her powerful magic and her tempestuous relationship with Geralt add depth to the story. Ciri, with her special abilities and her role in the prophecy, is another great character.
There are several interesting characters in the Monogatari Series Novel. Oshino Meme is one of them. He is this mysterious figure who seems to know a great deal about the supernatural world and often gives advice to the other characters. He has an air of enigma around him. Then there's Nadeko Sengoku. Her character development from a shy girl to someone with more complex emotions and motives is really fascinating to follow.
The hitman is the central and most interesting character. His training, which allows him to be a master of disguise and combat, is something that makes him engaging. But also, the characters he interacts with during his missions are quite interesting. For example, the informants who provide him with crucial information might be in it for their own reasons, and they could be in danger themselves. There may be other assassins in the story who are after the same targets as him, and the power dynamics and rivalries between them can be really captivating.