I'm not sure about the main characters in this 'the day of wrath story' as there's not enough information. But if it's a story about a community facing wrath, the main characters could be the leaders of that community who have to deal with the situation, or it could be the ones who have caused the wrath in the first place.
Since I don't know the specific 'the day of wrath story', it's difficult to determine the main characters. It could be Gods or deities if it's a religious story about divine wrath.
There could also be an antagonist. This character might be the cause of the 'day of wrath' or someone who tries to take advantage of the chaos that the day brings. For example, if the day of wrath is brought about by some sort of social upheaval, the antagonist could be a power - hungry figure who wants to gain more control during the turmoil.
Typically, in a 'the wrath of man story', the central character is, of course, the man in a state of wrath. He could be a regular guy who has been wronged in some way. There may also be supporting characters. For example, a friend who tries to calm him down or a mentor who gives him advice. And then there could be the antagonists, the ones who have made him angry in the first place. They might be powerful figures or just ordinary people with bad intentions.
The Lich King, Arthas, is central to the 'wrath of lich king story'. Then there are characters like Uther the Lightbringer who was Arthas's mentor and whose influence still lingers in the story. Sylvanas Windrunner also has her part to play, especially in relation to the undead and her own vendetta against the Lich King. And many other heroes from different races, such as Thrall from the Horde, contribute to the complex web of characters in this story.
Another possible theme is chaos. The 'day of wrath' might bring about chaos in the story. People's lives could be turned upside down, relationships broken, and normalcy disrupted. This chaos then serves as a backdrop for the characters to either succumb to or rise above the difficult situation.
I'm not sure who the author of the 'Day of Wrath Novel' is as the name isn't specific enough to identify a single work and its author.
Since I don't have specific knowledge of this exact 'wrath a seven deadly sins story', in a general sense, there might be a central character who is either consumed by wrath or trying to overcome it. There could also be supporting characters like a mentor figure who tries to guide the wrath - filled character, or an antagonist who provokes the wrath. There may be other characters who are victims of the wrath - driven actions in the story.
I don't know for sure since I haven't read it. But it's likely that the 'king of wrath' is one of the main characters. There may also be characters who are his advisors, enemies, or family members who play important roles in the story.
Since it's called 'dragon wrath novel', perhaps there is a young hero who has to face the dragon's wrath. There could also be an old wizard who knows about the dragons and tries to guide the hero. And of course, the dragon itself would be a main character, with its own motives and backstory that led to its wrath.
Not having read the 'angel of wrath novel', we can only speculate. The main character is probably the angel of wrath itself. There may be side characters such as those who are the targets of the angel's wrath, for example, sinners in a religious - inspired setting or enemies in a more general fantasy setting. There could also be other angels or spiritual beings that play important roles, either trying to temper the wrath of the main angel or being drawn into its actions.
Well, without more specific information, it's hard to say exactly. It could be a fictional story where a particular day is filled with wrath. Maybe it's a day when a character or a group of characters face the consequences of their wrongdoings. It could also be related to a natural disaster that occurs suddenly and is seen as an act of wrath from nature or some higher power.