The X - Men universe itself is very popular. Fans love to delve deeper into the characters and their relationships. Jean Grey is a central figure, and her Phoenix form adds an extra layer of intrigue. Fanfics allow fans to explore different scenarios that the official comics or movies might not have covered, like alternate universes where the Phoenix's power is used in unique ways.
One common theme is power struggle. Since Jean Grey as Dark Phoenix has immense power, the OC often has to deal with that power dynamic, either trying to control it or being affected by it.
You can try fanfiction websites like Archive of Our Own (AO3). It has a large collection of X - Men fanfics, including those focused on Jean Grey as the Phoenix. Just use the search function and type in relevant keywords.
Another theme is identity. OCs in these fanfics usually have to define themselves in relation to Jean Grey's Dark Phoenix form. Are they an ally? A rival? This exploration of identity adds depth to the stories.
Jean Grey is a powerful mutant. Her powers first manifested when she was a young girl. She witnessed the death of her friend Annie, which triggered her telepathic abilities. She was later recruited by Professor Xavier to join the X - Men. Her powers include telepathy and telekinesis, which continued to grow over time. She has a complex relationship with the Phoenix Force, which at times has both enhanced and endangered her and those around her.
In the X-Men comics by Jean Grey, Raven doesn't die. Her character has managed to overcome many threats and remain a vital part of the story. The plotlines often have her finding ways to escape or overcome potential death situations.
I've also heard of 'The Phoenix's Protector'. In this fanfic, the OC is a mutant with special powers that complement Jean Grey's Dark Phoenix. It has some exciting action scenes and the relationship between the two characters is portrayed in a very emotional and believable way.
Sure. One great 'Jean Grey Dark Phoenix OC fanfic' is 'Rise of the Dark Phoenix' which delves deep into the psyche of an original character in the Dark Phoenix universe. It has an interesting take on how the OC interacts with Jean Grey and the other X - Men.
One key element is the manifestation of her powers as a child due to trauma. Another is her recruitment by Professor Xavier. And of course, the discovery and development of her telepathy and telekinesis powers.