Imagine... if you can... that with a simple spin of a dial... a strange dial from another dimension... you could become any number of super-heroes! 
House of Mystery #156 is an issue of the series House of Mystery (Volume 1) with a cover date of January, 1966. It was published on November 18, 1965.
Synopsis for "Dial H for Hero!"
Imagine... If you can... that with a simple spin of a dial... a strange dial from another dimension... you could become any number of super-heroes! Robby Reed held this fantastic secret in his hands! But there was one problem that even confused Robby-- he never knew which hero or what powers he would possess when he undertook to... Dial H for Hero!
Appearing in "Dial H for Hero!"
Featured Characters:
- Robby Reed (First appearance)
Supporting Characters:
- Bart (First appearance)
- Joey (First appearance)
- Miss Millie (First appearance)
- Gramps Reed (First appearance)
Antagonists:
- Armour (Single appearance)
- Thunderbolt (First appearance)
- Mr. Thunder (First appearance)
Other Characters:
- Airliner Pilots
- Mr. Marlboro (First appearance)
Locations:
- Earth-One
- United States of America
- Littleville (First appearance)
- Airport
- Marlboro Chemical Company
- Thunderbolt Hideout
- Valley Dam
- Valley Ridge
- Littleville (First appearance)
- United States of America
Items:
- H-Dial (First appearance)
Vehicles:
- Passenger Jet
- The Thunderbolt "Crime" Machine (First appearance)
Concepts:
Synopsis for Martian Manhunter: "Look What Happened to J'onn J'onzz!"
A cobra-beast with fantastic powers emerges from the Idol-Head of Diabolu, and the Book of Diabolu Legends confirms that only an alien's touch can defeat it, though the alien will disappear as a result, being absorbed into its body. J'onn J'onzz and Zook try to defeat the cobra-beast from long distance, but the creature survives all their attempts. Finally, J'onzz does touch the creature and is absorbed into its being. But he simply uses his chameleon power to restore himself to his Martian identity, thus cancelling out the beast's existence.
Appearing in Martian Manhunter: "Look What Happened to J'onn J'onzz!"
Featured Characters:
Supporting Characters:
Antagonists:
- The Cobra-Beast (Single appearance)
Locations:
- Earth-One
- Martian Manhunter's Mountain Cave
Items:
- Idol-Head of Diabolu (Mentioned only)
Vehicles:
- Plane
Notes
- This is the first appearance of Robby Reed, and the H-Dial.
- The H-Dial is shown to have 10 letters, H, E, R, and O being 4 of them. This will become very inconsistent as the H-Dial is explored further.
- "Dial H for Hero!" was reprinted in Superboy #184 and again in Showcase Presents: Dial H For Hero Vol. 1.
- "Look What Happened to J'onn J'onzz!" was reprinted in Showcase Presents: Martian Manhunter Vol. 2.
- The single paged text article "Mysteries of the Ages" appears in this issue.
See Also