In the Invasion!

Invasion! (DC Comics)

Invasion! was a three issue comic book limited series and crossover event published in late 1988-early 1989 by DC Comics. It was plotted by Keith Giffen, and ties up a great many plotlines from various Giffen-created DC series, including Omega Men, Justice League International, and Legion of...

annual series of 1988 by DC Comics

DC Comics

DC Comics, Inc. is one of the largest and most successful companies operating in the market for American comic books and related media. It is the publishing unit of DC Entertainment a company of Warner Bros. Entertainment, which itself is owned by Time Warner...

, the Alien Alliance was an alliance against Earth in order to plot a way for the Dominion to create a race of Super-men using the Metagene

Metahuman

Metahuman is a term to describe superhumans in DC Comics' shared universe, the DC Universe. It is roughly synonymous with both mutant and mutate 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...

. The alliance consisted of the Dominators

The Dominators

The Dominators is a serial in the British science fiction television series Doctor Who, which originally aired in five weekly parts from 10 August to 7 September 1968.-Plot:...

, the Khund

Khund

The Khunds are a fictional alien race in the DC Universe, notable for extreme violence. They first appeared in Adventure Comics #346 , as enemies of the Legion of Super-Heroes in the 30th century.-Fictional history:...

s, the Psions

Psion (comics)

The Psions are a fictional extraterrestrial species in the DC Universe. The Psions first appeared in Tales of the New Teen Titans #4 and were created by Marv Wolfman and George Pérez...

, the Gil 'Dishpan, the Okaarans, the Thanagarians, Citadellians and the Durlans. The war on Earth was observed by the Daxamites.

The alliance fell apart due to the combined efforts of all the Earth's heroes (led by Captain Atom

Captain Atom

Captain Atom is a fictional comic book superhero that has existed in three basic incarnations. Created by writer Joe Gill and artist/co-writer Steve Ditko, he first appeared in Space Adventures #33 . Captain Atom was created for Charlton Comics but was later acquired by DC Comics and revised for...

) and the Daxamites changing allegiances. A handful of aliens were stranded on earth after the war.

Imperiex War

In Superman comics, a team was called to defend Earth in the Imperiex Wars. An alliance was formed between Earth's most powerful heroes. These heroes included Maxima, Superman

Superman

Superman is a fictional comic book superhero appearing in publications by DC Comics, widely considered to be an American cultural icon. Created by American writer Jerry Siegel and Canadian-born American artist Joe Shuster in 1932 while both were living in Cleveland, Ohio, and sold to Detective...

, Kalibak

Kalibak

Kalibak is a fictional character, a deity and supervillain published by DC Comics. Created by Jack Kirby, the character first appeared in New Gods #1 .- Fictional character biography :...

, Steel

Steel (John Henry Irons)

Steel , also known as the Man of Steel, is a fictional character, a superhero in the DC Universe. First appearing in The Adventures of Superman #500 , he is the third character known as Steel and was created by Louise Simonson and artist Jon Bogdanove...

, Starfire

Starfire (comics)

Starfire is the name of several fictional comic book characters published by DC Comics. The most prominent Starfire is Koriand'r, the fourth character to use that name...

, Doomsday

Doomsday (comics)

Doomsday is a fictional character, a supervillain that appears in comic books published by DC Comics. The character first appears in Superman: The Man of Steel #18 , and was created by writer-artist Dan Jurgens. IGN's list of the Top 100 Comic Book Villains of All Time ranked Doomsday as #46...

 and Darkseid

Darkseid

Darkseid is a fictional character that appears in comic books published by DC Comics. The character first appeared in Superman's Pal Jimmy Olsen #134 and was created by writer-artist Jack Kirby....

.