Professor X is the most powerful mutant from the x-men series.

Jean Grey, along with Charles Xavier, is an Omega Class mutant meaning they have the most powerful mutations. But, Jean Grey is more powerful than Xavier simply because as well as having powerful telepathy (rivaling Xavier's telepathy) and telekinesis she has a plethora of other abilities. Here is an overview of the extent of Jean Grey's powers (1): 1) Telepathy 2) Telekinesis (later developing into telekinetic sensitivity) 3) Ability to travel unaided through space 4) Ability to physically manipulate any kind of matter and energy 5) Ability to create cosmic fire 6) Ability to resurrect from death and manipulate the lives of others 7) Ability to manipulate timelines Now the first two of these powers are fairly straight forward. Her telepathy is powerful enough 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" (1) As time goes on, Jean's telepathy develops to become so powerful she can "manifest her telepathy as a psionic firebird whose claws can inflict both physical and mental damage. " (1) Jean Grey's telepathy eventually surpasses that of Charles Xavier. Even without the aid of her other powers, Jean Grey is many times more powerful than Charles Xavier. Her telekinesis abilities are fairly straighforward. Jean-Grey has the ability to create "shields and energy blasts" she later can "feel the texture of objects, their molecular patterns, feel when other objects come into contact with them, and probe them at a molecular level. " (1) This is something which Charles Xavier is simply unable to do. From the rest of these abilities the most important one is probably number 6. Simply because this allows Jean (as Phoenix) to "revive, absorb, rechannel, and preserve the life-force of any kind of life-form, meaning that she can take life energy from one person and give it to others, heal herself with the same life energy, or even resurrect the dead. " (1) Jean-Grey can kill anyone she pleases as that is one of her abilities. These abilities are not seen by any other mutant. Only Jean-Grey. No other mutant has these kind of powers. With her ability to create cosmic fire, Jean-Grey can burn through anything. Nothing can stop the fire as it can burn underwater and does not require oxygen. With this ability matter is completely "destroyed" the fire leaves no ash, nothing. Jean can "rearrange matter at a subatomic level, fly unaided through space, survive in any atmosphere, and manipulate electromagnetic and cosmic energies for various effects and atmospheric disturbances. She can also create stargates that can transport her to anywhere in the universe instantaneously" (1). There is literally no stopping her. When it comes down to it, Professor X is an extremely powerful mutant but, Jean-Grey's powers are almost incalculable. To put it bluntly, she can basically do anything she pleases. Literally, nothing can stop her. She cannot die forever, as she has the ability to resurrect herself. As Phoenix, nothing can stop Jean-Grey. Seeing how I have found a character which is much more powerful than Charles Xavier, the resolution is defeated. Sources: 1. . http://en.wikipedia.org...