Who could be the Angel of Vengeance in 'Harry Potter Angel of Vengeance' fanfiction?

One interesting plot could be the angel of vengeance being a long - lost magical being that has a connection to Harry's family. It might come to Hogwarts to right some ancient wrongs that have been plaguing the wizarding world for centuries.

The 'angel' could be a new character created by the fanfiction author. This character might have some extraordinary powers or a very kind heart that earns them the title of 'angel'. It could also be an existing character who is portrayed in a new light, like Luna Lovegood. Luna has this ethereal quality about her already, and in this fanfiction, she could be elevated to an 'angel' - like status, perhaps being the one who always saves the day with her unique insights.

It's possible that there is a character who has wronged the angel in some way in the past, which has led to the angel's quest for vengeance. This character could be a scientist who meddled with forces he didn't understand, or a cult leader who made a pact with dark forces. And then, of course, there is the angel of vengeance itself, which is likely to be a very complex and terrifying character.

Luna Lovegood might also be an interesting choice. Imagine if something really bad happened to her father or her friends in a fanfiction. Luna, who is often seen as a bit of an outsider but also very strong - willed, could be driven by a spirit of vengeance. She might use her unique perspective and knowledge of the wizarding world's oddities to seek retribution in a very Luna - like way.

It could be a new dark wizard or witch who has a personal vendetta against Harry. Maybe they blame Harry for the downfall of their family or their own misfortunes. So they start causing trouble in the wizarding world, and Harry, in order to protect his friends and the world he loves, decides to take vengeance on this new threat.

The grotesque and terrifying creatures in it. They are often described in very detailed and disturbing ways that can send shivers down your spine.

One possible plot could be that Harry discovers that a group of dark wizards were behind the death of his parents in a more elaborate and concealed way than he initially thought. So he sets out on a journey to find and destroy them one by one, using his advanced magical skills and the help of his closest friends.

Lily Potter could also be a great candidate. Her love for Harry was so strong. As a guardian angel, she could appear to Harry in his dreams or in moments of great danger, using her motherly love as a shield and giving him advice based on her own experiences in the wizarding world.

It could be his mother, Lily. Her love was already a powerful protection for Harry, so in the fanfiction, it could be her spirit acting as a guardian angel, using her love to shield him from harm in a more direct and continuous way.

The Death Eaters are often common antagonists. Since they were the main followers of Voldemort, and Harry has every reason to be vengeful towards them for all the harm they caused. They killed many innocent people and were a constant threat to the wizarding world.