Jean Grey-Summers (née Grey) is a fictional comic book superheroine appearing in books published by Marvel Comics. She has been known under the aliases Marvel Girl and Phoenix, and is best known as one of five original members of the X-Men
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 her husband Cyclops; Professor X, who is like a father and mentor to her; Wolverine who is a very good friend and, at several points, a potential love interest; Storm , who is her best friend and a sister-like figure; her daughter Rachel Summers; her son X-Man; and stepson Cable
Jean Grey-Summers is an Omega-level mutant, and has been one of the physical hosts of the vastly powerful Phoenix Force who possesses god-like powers and is one of the most feared beings that ever lived. With the Phoenix Force, Jean has potentially limitless psionic powers of telepathy, telekinesis, cosmic pyrokinesis and energy manipulation - Henry McCoy has said that, based on her massive power levels, "on the Richter scale, she'd be a 12". When bonded to the Phoenix, she is said to outclass mutants, granting her complete control over matter, energy, thought, and unlimited psionic energies. She can tap into reserved energies for future generations, denying them existence.
Jean is considered to be one of the Earth's most powerful telepathic minds. Jean Grey, as the Phoenix, has limitless telepathic powers, able to influence any individual. Jean's telepathy allows her to read, influence, control, and communicate with the minds of others, project her mind into the astral plane, and generate telepathic force blasts that can stun or kill others. Jean is one of the few telepaths skilled enough to communicate with animals . She can also telepathically take away or control people's natural bodily functions and senses, such as sight, hearing, smell, taste, or even mutant powers. A side effect of her telepathy is that she is gifted with an eidetic memory.