Originally Posted by
Solitaryhawk
I've had the following on file for some time now. I hope it can of some use to you:
Omega Class: An Omega-level mutant is one with the most powerful genetic potential of their mutant abilities. Some abilities depicted by mutants described as Omega-level include immortality, extreme manipulation of matter and energy, high psionic ability, strong telekinesis, and the potential to exist beyond the boundaries of the known physical universe. No firm definition has been offered in comics. Mutants that have been confirmed as Omega-level include Jean Grey, Vulcan, Rachel Summers, Iceman, Legion, Magneto. These mutants are the rarest of all mutants.
Alpha Class: The Alpha Mutants are the most powerful and most feared mutants. Alpha mutants have extremely powerful mutant traits without any significant flaws. Less than 10% of mutants are Alpha mutants so they are very rare. Some of the Alpha mutants include Cyclops, Gambit, Professor X, Havok, Colossus, and Emma Frost.
Beta Class: As far as how potent their powers are Beta Mutants are on the same level as Alpha mutants. The difference between Beta Mutants and Alpha Mutants is that the Beta Mutants have flaws, albeit very small flaws. The Beta mutants are also believed to be about 10% of the mutant population. Some examples of Beta mutants are Beast, Angel, Wolverine, Mystique and Sabretooth.
Gamma Class: Gamma mutants have very powerful mutants (starting to see a pattern?) but they have flaws. Unlike the Beta mutants a Gamma mutant's flaw is a major flaw that makes their life very hard. The best example is probably Rogue. Rogue can absorb anybody's power, which makes her very powerful, but she can't touch people making any kind of romantic life difficult. Also, while Alpha and Beta mutants can pass as regular looking humans, the majority of Gamma mutants cannot because they have physical defects like Blob or Marrow.
Delta Class: Delta Mutants are like Alpha mutants in that they don't have any significant flaws. The only problem is that Delta mutants don't have powers that match an Alpha mutant, or even a Beta or Gamma mutant. At least 50% of mutants are Delta mutants making them the most common type of mutant. Some examples of Delta mutants are Forge, Domino and Calisto.
Epsilon Class: Epsilon mutants or like Gamma mutants in that they have major flaws that make their lives very difficult. They also like Delta mutants have little or no significant powers to speak of. Approximately 20% of mutants are Epsilon mutants making them the second most common type of mutant. An example of an Epsilon class mutant is Beak.
Zeta Class: Zeta class mutants make up roughly 10% of the mutant population. They are mutants who have the "X-Gene", but it is still latent.