It could be a young hero named Alex. Alex might be brave and curious, always eager to explore the unknown areas beyond the darkness.
Perhaps there is a wise old mentor character, like Professor Gray. Professor Gray has a vast knowledge of the dark realm and guides the younger characters through their adventures.
There might also be a mysterious figure, like the Shadow Walker. The Shadow Walker has powers related to the darkness and at first seems like an enemy but later turns out to be an ally in the fight against a greater threat that exists beyond the darkness.
I'm not sure specifically as it depends on the author's creation. But it could be characters who are on a journey to understand the true nature of darkness and light, like a young adventurer or a wise old sage.
There might be a mentor figure. This character could be someone who has already been through the 'darkness' and is guiding the other characters in the story. For example, an old wizard in a fantasy setting who helps the protagonist understand the secrets to move beyond the dark forces that are surrounding them. They have the wisdom and experience to show the way.
I'm not sure as I haven't read it. But usually in such novels, there could be a brave hero or heroine who leads the fight against the darkness.
I'm not sure specifically as it depends on the fanfiction itself. But it could be an original character created by the author who has a special ability to perceive the darkness. Maybe it's a hero - type figure who is determined to fight against whatever the darkness represents.
In some cases, it might focus on the side characters from the original work. The author might have seen potential in these characters to be the main focus in a darker story. So, it could be the less - known characters that get a chance to shine and show their true nature in this 'ultimate darkness' fanfiction.
The main characters are Darkness and Lily. Darkness could be a complex character, maybe having some hidden motives or a tragic past that makes it act in certain ways. Lily, on the other hand, might be the one who tries to understand Darkness and bring out the good in it. She could be kind - hearted and have a strong sense of justice.
There could be a powerful dark lord as a main character. He might be the one ruling the empire with an iron fist.
I'm not sure as I haven't read it. But it could be the typical heroes and heroines you often find in fanfiction. They might be original characters created for this story, or well - known characters from the source material if it's a fanfic based on something else.
It's hard to say exactly without reading it, but often in such fanfictions, there are characters that are either from the original source material it's based on or new characters created specifically for the fanfiction. They could be heroes with special abilities trying to fight against an evil force.
There could also be an antagonist, someone who opposes the goals of the main character. This character might be driven by power, greed or some other negative motives and creates conflict for the protagonist.