A powerful cosmic entity, an immortal being representing the Life-Death-Rebirth cycle, all current and future life, and is the nexus of all psychic energy ever to have existed, to exist or will exist. It has, at times, chosen a host to live within, granting the vessel nigh-omnipotent power. It has the power to create or destroy anything, or everything. The Phoenix has had various hosts, but the most well known and frequent host is the mortal mutant Jean Grey.