Publication history

Blackworld first appeared in Thor

Thor (Marvel Comics)

Thor is a fictional superhero who appears in publications published by Marvel Comics. The character first appeared in Journey into Mystery #83 and was created by editor-plotter Stan Lee, scripter Larry Lieber, and penciller Jack Kirby....

#195 (January 1972) and was created by Gerry Conway

Gerry Conway

Gerard F. "Gerry" Conway is an American writer of comic books and television shows. He is known for co-creating the Marvel Comics vigilante The Punisher and scripting the death of the character Gwen Stacy during his long run on The Amazing Spider-Man...

 and John Buscema

John Buscema

John Buscema, born Giovanni Natale Buscema , was an American comic-book artist and one of the mainstays of Marvel Comics during its 1960s and 1970s ascendancy into an industry leader and its subsequent expansion to a major pop culture conglomerate...

.

Fictional history

Blackworld is an extra-dimensional world resembling Earth, but where historical developments that took centuries on Earth, here they occurred within hours.

The Rigellian

Rigellians (Marvel Comics)

The Rigellians, also known as the Colonizers of Rigel, are a scientifically and technologically advanced alien race in the fictional Marvel Comics Universe, devoted towards amassing an empire via colonization. They are native to Rigel-3 the third planet orbiting the star Rigel in the Milky Way Galaxy...

 colonizer Tana Nile

Tana Nile

Tana Nile is a fictional character in the Marvel Universe.-Fictional character biography:Tana Nile, of the planet Rigel-3, was a leading female member of the Colonizers of Rigel. In her attempt to colonize the planet Earth, Tana Nile took a human form as Jane Foster's roommate. Tana took control of...

 took a sample of Ego the Living Planet

Ego the Living Planet

Ego the Living Planet is a fictional character, a supervillain in the Marvel Comics Universe. The character first appeared in Thor #132 and was created by writer Stan Lee and artist Jack Kirby.-Publication history:...

 and bonded it to the planet Blackworld, hoping that it might aid the Rigellians in terraforming new worlds. Instead, Blackworld spawned Ego-Prime, who bore some of Ego’s power, and could dramatically accelerate evolution. On Blackworld, Tana Nile encountered Sif, Hildegarde

Hildegarde (Marvel Comics)

Hildegarde is a fictional character in the Marvel Universe.-Fictional character biography:Hildegarde is one of the Valkyries. Thor sent Sif and Hildegarde to Blackworld. There, they came upon a town where people were fleeing in blind terror from Ego-Prime, which was created accidentally from Ego...

, and sailor Silas Grant. Ego-Prime proved to be uncontrollable and sought to transform Earth to resemble Ego so that it could become a part of the bio-verse. Blackworld was subsequently destroyed in a nuclear war, while Tana Nile and her allies returned to Earth.