Aquaman; Wonder Woman; Superman; Green Lantern [Hal Jordan]; Batman; The Flash [Barry Allen]; Martian Manhunter [J'onn J'onzz] (all as the Justice League of America/JLA); Starro (villain)
Reprinted:
from Brave and the Bold, The (DC, 1955 series) #28 (February-March 1960)
Wonder Woman; Aquaman; Martian Manhunter; Green Lantern [Hal Jordan]; The Flash [Barry Allen]; Snapper Carr (all as the Justice League of America/JLA); Starro (villain)
Reprinted:
from Brave and the Bold, The (DC, 1955 series) #28 (February-March 1960)
The Flash [Barry Allen]; Green Lantern [Hal Jordan]; Wonder Woman; Aquaman; Martian Manhunter; Superman; Batman; Snapper Carr (all as the Justice League of America/JLA); Amazo (villain); Professor Ivo (villain); Mirror Master (flashback)
Synopsis:
As several JLAers experience a sudden power loss, Flash finds that someone has used powers like theirs to steal a European catfish and a cicada. Snapper suggests the thefts have to do with someone researching immortality, and the JLA splits up to investigate other long-lived creatures. In every case, the JLAers come up against Amazo, who steals their powers, defeats them, and takes them to his creator's lab, where Professor Ivo is preparing an immortality serum. Green Lantern is able to use the weakness of his own ring against Amazo and Ivo, restore the JLA's powers, and defeat the villain.
Reprinted:
from Brave and the Bold, The (DC, 1955 series) #30 (June-July 1960)
The Flash [Barry Allen]; Superman; Martian Manhunter; Green Lantern [Hal Jordan]; Batman; Wonder Woman; Aquaman; Green Arrow; Snapper Carr (all as the Justice League of America/JLA); Monty Moran (villain, flashback); Professor Menace (villain, flashback); Captain Cold (villain, flashback); Clock King/King Clock (villain, flashback); Electric Man (villain, flashback); Puppet Master (villain, flashback); Dr. Destiny (villain)
Reprinted:
from Justice League of America (DC, 1960 series) #5 (June-July 1961)