10 Most Powerful Marvel Heroes Of All Time

8. Jean Grey

There are certainly more powerful mutants out there than Jean Grey, but she has what others don't: the power of the Phoenix Force.

Jean is already an Omega-Level mutant with the ability to read minds and use telekinesis, but when you factor in the cosmic potential of the Phoenix you get an X-Man incomparable in terms of ability. Yes, people will automatically go back to all the times she's died and returned from the grave, but there's no underestimating Jean Grey; whether in or out of control of the Phoenix, she is a real force to be reckoned with.

When the Phoenix was retconned to be an alien entity, Jean became Marvel's preeminent cosmic heroine. Her powers while in that form are also unparalleled, with the former Marvel-Girl able to obliterate powers and even manipulate matter on a molecular level.

Consider her influence as a key figurehead in the battle for mutant liberty, as well as the fact she just keeps coming back, you really do have to wonder if any other X-Man could reach her level.