- Script:
- Otto Binder
- Pencils:
- George Papp
- Inks:
- George Papp
- Colors:
- ?
- Letters:
- ?
- Genre:
- superhero
- Characters:
- Superboy; Bizarro #1 (intro, origin); Professor Dalton; Martha Kent; Superboy Robots; Melissa
- Synopsis:
- Professor Dalton's duplicator ray produces flawed results including an imperfect Superboy - Bizarro, who is befriended by sightless girl Melissa.
- Reprints: show reprint note before migration
"The Thing of Steel" Chapter I. 1st appearance of Bizarro.
- Script:
- Otto Binder
- Pencils:
- George Papp
- Inks:
- George Papp
- Colors:
- ?
- Letters:
- ?
- Genre:
- superhero
- Characters:
- Superboy; Bizarro #1; Martha Kent; Melissa; green kryptonite
- Synopsis:
- Superboy attempts to subdue Bizarro with green kryptonite, but discovers that he is immune to it, he then uses a dummy of Melissa to lure dim witted Bizarro into a military trap.
- Reprints: show reprint note before migration
"The Thing of Steel" Chapter II.
- Script:
- Otto Binder
- Pencils:
- George Papp
- Inks:
- George Papp
- Colors:
- ?
- Letters:
- ?
- Genre:
- superhero
- Characters:
- Superboy; Bizarro #1; Melissa; Krypton (flashback); green kryptonite (flashback)
- Synopsis:
- The army cannot stop Bizarro but his will is sapped when he realises that blind Melissa only likes him because she cannot see his face. Superboy finds his imperfect duplicate's one weakness but the desperately unhappy Bizarro goes meekly to meet his fate, the resulting explosion restoring Melissa's sight. Superboy wonders if Bizarro knew that his demise would cure Melissa's blindness.
- Reprints: show reprint note before migration
"The Thing of Steel" Chapter III.
- Script:
- Otto Binder
- Pencils:
- Al Plastino
- Inks:
- Al Plastino
- Colors:
- ?
- Letters:
- ?
- Genre:
- superhero
- Characters:
- Superman; Brainiac (intro, villain); Lois Lane; Koko; Kandor (intro); Professor Kimda (intro); Krypton (flashback); Jonathan Kent (flashback); Martha Kent (flashback); Superbaby (flashback); Superboy (flashback); Fortress of Solitude
- Synopsis:
- While on an experimental rocket, Clark and Lois encounter the alien Brainiac, who plans to shrink and bottle the great cities of Earth and then use them to repopulate his planet. Superman gets inside Brainiac’s ship when the villain snatches Metropolis and there finds a bottle with the Kryptonian city of Kandor. He enters the bottle and with the help of a scientist there restores the cities of Earth while Brainiac lies in suspended animation for his trip home. Because there is not enough power to restore Kandor, Superman places the city in his Fortress, as Brainiac rockets away empty-handed.
- Reprints: show reprint note before migration
1st appearance of Brainiac and Kandor
- Script:
- Jerry Siegel
- Pencils:
- Joe Shuster
- Inks:
- Joe Shuster
- Colors:
- ?
- Letters:
- ?
- Genre:
- superhero
- Characters:
- Superman
- Reprints: show reprint note before migration
not from Action #1 as stated