"The Dreams of Doom": When a youthful criminal and his dog gain the powers of Green Kryptonite radiation from passing through a green space-cloud, they come to Earth and endanger Superboy and Krypto with their radiation and their abilities to transform anything they touch into Kryptonite. But Mr
Appearing in "The Dreams of Doom"
- Blorians (Flashback only)
- Planet Blor (Flashback only)
- Fifth Dimension (Mentioned only)
Synopsis for "The Dreams of Doom"
When a youthful criminal and his dog gain the powers of Green Kryptonite radiation from passing through a green space-cloud, they come to Earth and endanger Superboy and Krypto with their radiation and their abilities to transform anything they touch into Kryptonite. But Mr. Mxyzptlk appears and, rather than see his old enemies destroyed by someone else, teleports the Kryptonite Kid and Kryptonite Dog away, restores the objects turned into Kryptonite to their former natures, and then vanishes.
Appearing in "The Old Maid of Smallville!"
- Edith Finch (Single appearance)
- Ed the Bully
- Grandma Smith (Single appearance)
- John Hale (Single appearance)
- Tim Ross (Single appearance)
- Grandma Smith's House
- Smallville High School
- Ye Olde Sawmill Inn
- Waterberg High School (Mentioned only)
- Oldsmobile 4-Door Convertible
Synopsis for "The Old Maid of Smallville!"
When an "old maid" teacher comes to Smallville High and is cruelly taunted, Superboy takes a hand and helps her find romance.
Appearing in "The Invasion of Krypton!"
- Alien invaders (Flashback only)
- Kryptonian Firefly
- Anti-Gravity Ray
- Atomic Ray Weapon
- Green Kryptonite
- Healing Cabinet
- Jumping Boots
- Mind Proper Ray
- Vaxxium (Destroyed)
- Flying Saucer
Synopsis for "The Invasion of Krypton!"
Superboy once again uses his Total Recall and mind-prober ray to remember another episode of his childhood on Krypton. This time, he remembers how, when he and Krypto were treated with Jor-El's anti-gravity ray, they used their resultant powers to defeat an alien invasion force.
- In The Invasion of Krypton, Jor-El reveals that he is using the last of his supply of Vaxxium to power the Anti-Gravity Ray. Kal's age indicates that they are in Krypton's final days, and thus Jor-El's discovery of Anti-Gravity itself; the Anti-Gravity belts; and his Golden Folly in Superman #233 preceded this issue chronologically.
- No trivia.
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