Invasion! was a three-part Crisis Crossover miniseries published by DC Comics in 1988. (It should not be confused with the TV series of the same name, or any other invasion-themed series.) An alien race called The Dominators discovers that Earth's superhumans get their powers from a 'meta-gene' and decide to capture them all to be used as living weapons with which to conquer the universe. Realizing that they cannot beat the heroes by themselves, they convince several other races from around The DC Universe to aid them under the pretense that the "metahumans" were too dangerous to be allowed to exist (and taking advantage of the fact that the Green Lantern Corps had, at the time, been reduced to only a handful.)