In most comic storylines, the Hulk isn't strictly immortal. He can be injured and even defeated, but his durability and regenerative abilities make him very hard to kill permanently.
I think 'Immortal Hulk: The Best Defense' is quite popular. It shows the Hulk in his new incarnation, dealing with threats not just with brute force but also with a certain kind of cunning and survival instinct that makes it a great read. Also, the art in these graphic novels is often praised, which contributes to their popularity.
The main character is, of course, the Hulk, or rather the complex entity that is both the Hulk and Bruce Banner. There are also some other characters like Betty Ross who plays an important role in the story.
One aspect that makes 'Immortal Hulk Graphic Novel' unique is its exploration of horror elements within the superhero genre. It combines the traditional Hulk smashing action with a sense of dread and the unknown. The way it portrays the Hulk as an almost unstoppable force of nature, with a touch of the supernatural, is something that sets it apart. For example, some of the scenes where the Hulk is in the shadows, and you can't quite tell what he's going to do next, create a really tense atmosphere that's not typical for a superhero comic.
The uniqueness of 'A Walk to Remember Flatline Fanfiction' lies in how it can expand on the emotional depth of the characters. When a character flatlines, it's a moment of extreme crisis. Fanfiction writers can use this to dig deeper into the feelings of the other characters - their grief, hope, and desperation. It also allows for different interpretations of the afterlife or near - death experiences, which can be really interesting to read about. Moreover, it might bring out new sides of the relationships between the characters that we didn't see in the original work.
Well, it might be unique because of the specific combination of characters like Amy Rose. The story might explore her character in a different light, perhaps in a more serious or unexpected situation.
Sure, She-Hulk is related to Hulk. Jennifer Walters, aka She-Hulk, got her powers because of a blood transfusion from her cousin Bruce Banner, who is Hulk. This connection is a key part of their storylines in the comics.