From Handbook of the Union Universe

This page shows characters who are of the Mutant Origin.

[edit] Mutant

The Mutant was born with their powers. Their innate abilities appeared either at birth or puberty. A rare few did not develop until adulthood. These powers set the mutant apart from the rest of mankind; they are capable of far more than any normal human being. Mutants are sometimes feared for their strange talents, but are more often admired by the public at large.

[edit] Metahuman

Metahuman is a term to describe superhumans in the DC Universe. It is roughly synonymous with both mutant and mutate (in the Marvel Universe) and posthuman in the Wildstorm and Ultimate Marvel Universes. Use of the term in reference to superheroes was coined in 1986 by author George R. R. Martin, first in the Superworld role playing system, and then later in his Wild Cards series of novels.

From Wikipedia