Info Jean Grey:
Jean Grey-Summers is a fictional comic book superheroine appearing in books published by Marvel Comics. She has been known under the aliases Marvel Girl and later, Phoenix and Dark Phoenix, and is best known as one of five original members of the X-Men, for her relationship with husband Cyclops, and for her central role and transformation in the classic X-Men storyline, the "Dark Phoenix Saga."

Jean Grey-Summers is a mutant born with telepathic and telekinetic powers. Her powers first manifested when she saw her childhood friend being hit by a car. She is a caring, nurturing figure, but she also must deal with being an Omega-level mutant and the physical manifestation of the cosmic Phoenix Force. She faces death several times in the history of the series, first in the classic "Dark Phoenix Saga" but due to her connection with the Phoenix Force, she, as her namesake implies, rises from death.

Phoenix is an important figure in the lives of other Marvel universe characters, mostly the X-Men, including her husband Cyclops; her mentor and father-figure Charles Xavier; her close friend and sometimes romantic interest Wolverine; Storm, who is her best friend and a sister-like figure; her daughter Rachel Summers; her son X-Man; and stepson Cable.

The character is present for much of the X-Men's history, and she is featured in all three X-Men animated series and several video games. Famke Janssen portrays Jean in the X-Men films. She is a playable character in X-Men Legends (2004), X-Men Legends II: Rise of Apocalypse (2005), and Marvel Ultimate Alliance 2 (2009), and appears as an enemy in the first Marvel: Ultimate Alliance. In 2006, IGN rated Jean Grey #6 on their list of Top 25 X-Men from the past forty years.
Source: wikipedia.org