BlaqChaos
Acording to Marvel:
"The Phoenix Force is the nexus of all psionic energy which has, and will always, exist in all realities of the multiverse. During its time as a sentient entity, it was known to possess the psyche of mortal telepaths and amplifies their psychic abilities to a cosmic, and in some cases, nearly incalculable scale. Its primary form is that of a gigantic firebird.
Its hosts have included Jean Grey and Rachel Summers, as well as Jean's clone, Madelyne Pryor. Unlike Rachel, the entity did not physically possess Jean Grey; instead, it created a second body identical to hers and through that body acted for her while she lay in a coma. However, the clone was created to mimic all aspects of humanity, including its flaws. Under the manipulation of such foes as Mastermind and Emma Frost, the Jean/Phoenix clone was unable to adapt to its new found humanity and was driven mad; as Dark Phoenix, it destroyed a planet populated by sentient creatures and subsequently committed suicide on Earth's moon. The Phoenix Force joined with Jean's second clone, Madelyne Pryor who was made by Sinister, until she was ultimately killed and the Phoenix consciousness rejoined with the awakened Jean. Another person who went by the code-name Phoenix is Rachel Summers(Marvel Girl), Jean's daughter from an alternate future. She bears an uncanny resemblance to her mother.
Recently, Jean began manifesting the attributes of the Phoenix Force. Despite this, she generally retained her self-control until her death at the hands of someone posing as Magneto, but the Phoenix Force returned to Earth and resurrected Jean Grey from her grave. Through a number of incidents including Jean having Wolverine kill her a number of times, Jean trapping herself in a glacier, the Phoenix Force jumping into Emma Frost, and parts of the X-Men factions being trapped in the Shi'ar event horizon, Jean Grey managed to assert herself and gain control of her Phoenix self and rescued everyone from the event horizon. As a result of the Shi'ar's attack on the Phoenix Force, it is currently in an incomplete state. Jean is now searching for the remaining Phoenix fragments in order to make herself and the Force whole again. "
"The Phoenix Force is the nexus of all psionic energy which has, and will always, exist in all realities of the multiverse. During its time as a sentient entity, it was known to possess the psyche of mortal telepaths and amplifies their psychic abilities to a cosmic, and in some cases, nearly incalculable scale. Its primary form is that of a gigantic firebird.
Its hosts have included Jean Grey and Rachel Summers, as well as Jean's clone, Madelyne Pryor. Unlike Rachel, the entity did not physically possess Jean Grey; instead, it created a second body identical to hers and through that body acted for her while she lay in a coma. However, the clone was created to mimic all aspects of humanity, including its flaws. Under the manipulation of such foes as Mastermind and Emma Frost, the Jean/Phoenix clone was unable to adapt to its new found humanity and was driven mad; as Dark Phoenix, it destroyed a planet populated by sentient creatures and subsequently committed suicide on Earth's moon. The Phoenix Force joined with Jean's second clone, Madelyne Pryor who was made by Sinister, until she was ultimately killed and the Phoenix consciousness rejoined with the awakened Jean. Another person who went by the code-name Phoenix is Rachel Summers(Marvel Girl), Jean's daughter from an alternate future. She bears an uncanny resemblance to her mother.
Recently, Jean began manifesting the attributes of the Phoenix Force. Despite this, she generally retained her self-control until her death at the hands of someone posing as Magneto, but the Phoenix Force returned to Earth and resurrected Jean Grey from her grave. Through a number of incidents including Jean having Wolverine kill her a number of times, Jean trapping herself in a glacier, the Phoenix Force jumping into Emma Frost, and parts of the X-Men factions being trapped in the Shi'ar event horizon, Jean Grey managed to assert herself and gain control of her Phoenix self and rescued everyone from the event horizon. As a result of the Shi'ar's attack on the Phoenix Force, it is currently in an incomplete state. Jean is now searching for the remaining Phoenix fragments in order to make herself and the Force whole again. "