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Key Facts
Introduction of the Fortress of Solitude
A prototype version of Superman's headquarters was introduced in Superman #17 and the name was mentioned in Superman #58
Key Facts
Introduction of the Fortress of Solitude
A prototype version of Superman's headquarters was introduced in Superman #17 and the name was mentioned in Superman #58
Key Facts
1st appearance and origin of Brainiac
1st appearance of the Bottle City of Kandor, the capital city of Krypton
[December 2025 - James Gunn posted an Instagram confirming Lars Edinger will portray Brainiac]
Key Facts
1st appearance and origin of Brainiac
1st appearance of the Bottle City of Kandor, the capital city of Krypton
[December 2025 - James Gunn posted an Instagram confirming Lars Edinger will portray Brainiac]
Key Facts
Mexican Edition published by Editorial Novaro
Key Facts
Mexican Edition published by Editorial Novaro
Key Facts
1st appearance of Congorilla, formerly Congo Bill
Key Facts
1st appearance of Congorilla, formerly Congo Bill
Key Facts
Full page teaser ad of the first appearance of Supergirl in Action Comics #252
Key Facts
Full page teaser ad of the first appearance of Supergirl in Action Comics #252
Key Facts
1st appearance of Supergirl
1st appearance of Metallo
1st appearance of Zor-El, the father of Supergirl
1st appearance of Allura In-Ze, the mother of Supergirl
Key Facts
1st appearance of Supergirl
1st appearance of Metallo
1st appearance of Zor-El, the father of Supergirl
1st appearance of Allura In-Ze, the mother of Supergirl
Key Facts
Glow in the Dark edition
Key Facts
Limited to 3,000 copies
Key Facts
Foil edition, limited to 1,000 copies
Key Facts
Lebanese edition, published as Superman Comics #5
Key Facts
2nd appearance of Supergirl
Key Facts
1st appearance and origin of Bizarro #1, an imperfect version of Superman
Key Facts
1st appearance and origin of Bizarro #1, an imperfect version of Superman
Key Facts
1st appearance of Bizarro Lois Lane
Key Facts
1st appearance of Dick Wilson, later Dick Malverne, a love interest of Supergirl
Key Facts
1st appearance of Dick Wilson, later Dick Malverne, a love interest of Supergirl
Key Facts
2nd cover appearance of Supergirl
Key Facts
1st appearance of Streaky the Supercat
Key Facts
Introduction of the concept that Kryptonians derive their powers from Earth's yellow sun
Introduction of the concept that Kryptonians are as powerful as ordinary humans under their native planet's red sun
Key Facts
Introduction of the concept that Kryptonians derive their powers from Earth's yellow sun
Introduction of the concept that Kryptonians are as powerful as ordinary humans under their native planet's red sun
Key Facts
Introduction of Bizarro World
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