Appearing in Superboy: "The Super-Pranks of Krypto!"
- Kosmon the Space Hunter (Single appearance)
Synopsis for Superboy: "The Super-Pranks of Krypto!"
Appearing in Aquaman: "Aquaman Meets Aquagirl!"
- Eddie (Single appearance)
- Hugo Morel (Single appearance)
- Atlanna (Flashback only)
- Tom Curry (Flashback only)
- Atlantis (Flashback only)
- Poseidonis (Flashback only)
- Curry Lighthouse (Flashback only)
- Atlantic Ocean
Synopsis for Aquaman: "Aquaman Meets Aquagirl!"
While riding in her yacht, a young woman sees through its glass floor that Aquaman has his leg pinned in the mouth of a giant clam. Grabbing an electric torch and jumping overboard, she saves Aquaman's life. Upon returning to the surface, both Aquaman and the girl are shocked to learn that she was under the water -- unaided by breathing devices -- for 60 minutes. The girl introduces herself as Lisa Morel, daughter of Dr. Hugo Morel, a famous Ichthyologist. Swimming to meet her father, Aquaman is once more surprised to find that Lisa can also swim at great speeds and up waterfalls. When revealing the discovery to Lisa's father, he dismisses it until she exhibits the ability to command sea life when she orders seals to prevent her fathers prized globe from falling into the ocean. Convinced, Dr. Morel asks Aquaman how he aquired his powers, Aquaman explains his origins once more. Since none of the Morel family originated from Atlantis, that theory was ruled out. Aquaman tells them he must return to the sea but he will return the next day.
Upon his arrival he is met by Lisa, who is wearing a duplicate of Aquaman's costume and calling herself Aquagirl, and wants to patrol the seas with Aquaman. Aquaman allows her to follow along, only to insure that she remains safe from the perils of the sea. After a few missions out at sea, suddenly Lisa's powers begin to fade away and Aquaman must rush her to the surface. Wondering what happened, Lisa is given the answers from Aquaman who found them in his mother's diary. In it, it explains that in Atlantis they eventually developed the ability to breath underwater, however there were the occasional "throwback" that were unable too, and so they were sent to the surface so that they can live. These throwbacks were identifiable by their purple eyes. Aquaman explains that Lisa must have been one of these throw backs, and that she gained her water-powers only because she attempted to save Aquaman, and that she would be fated to lose them anyway. Returning back to Dr. Morel's home, he admits that he lied to Aquaman about his daughter's past and that he found her 20 years ago in a life boat.
Appearing in Green Arrow: "The Case of the Vanishing Arrows!"
- Thugs (Single appearance)
- Batman (Mentioned only)
Synopsis for Green Arrow: "The Case of the Vanishing Arrows!"
Inspired by a note from the Batman signed with a bat-emblem, Green Arrow decides that all his arrows should be tipped with green arrow heads. Digging up a special green rock to make these arrow heads, Green Arrow and Speedy go into action foiling various crimes. However, after they have busted up each crime, their arrows suddenly vanish, are blown away, or are destroyed.
Once they have completely run out of arrows, Superman arrives and tells them that the arrow heads they were using were made out of Green Kryptonite and that, from a safe vantage point, Superman destroyed them so that they would not weaken him. After Superman departs, Green Arrow and Speedy have the rest of the rock destroyed so that it may not be used against Superman in the future.
- "Aquaman Meets Aquagirl!" is reprinted in Super DC Giant #S-26, Aquaman Archives, Volume 1, and 'Showcase Presents: Aquaman Vol. 1'.
- "The Case of the Vanishing Arrows!" is reprinted in World's Finest Comics #123, Super-Team Family #2, and 'Showcase Presents: Green Arrow Vol. 1'.
- First mention of the purple-eyed Atlanteans exile.
- First appearance of Star City.
- Green Arrow’s comments about “the renowned Batman” imply that he has not yet met Batman.
- This is the first meeting of Green Arrow, Speedy, and Superman, though Superboy and Oliver Queen met years ago, as shown in Adventure Comics #258.
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