| Issue | #1 |
| Published | March-April 1980 |
| Cover Price | 0.95 |
| Pages | 100 |
| Editing | Jack C. Harris |
| Characters | Legion of Super-Heroes [Saturn Girl; Lightning Lad; Cosmic Boy] |
| Genre | superhero |
| Pencils | Dick Giordano |
| Inks | Dick Giordano |
| Characters | Superboy; Legion of Super-Heroes [Cosmic Boy; Lightning Lad [as Lightning Boy]; Saturn Girl] |
| Genre | Superhero |
| Pencils | Curt Swan |
| Inks | Stan Kaye |
| Reprinted | from Adventure Comics (DC, 1938 series) #247 (April 1958) |
| Characters | Superboy; Legion of Super-Heroes [Cosmic Boy; Lightning Lad [as Lightning Boy]; Saturn Girl]; Jonathan Kent (cameo) |
| Synopsis | Three teens from the future offer Superboy membership in their super-hero club. But when Superboy fails to complete three simple tasks, the Legionnaires pretend to reject him, until they reveal that the three tasks were merely intitiation pranks which proved he is a good sport. |
| Genre | superhero |
| Script | Otto Binder |
| Pencils | Al Plastino |
| Inks | Al Plastino |
| Notes | Lightning Lad called Lightning Boy in this story. There are several other unidentified Legionnaires in this story. The main Legionnaires are not in their usual costumes. |
| Reprinted | from Adventure Comics (DC, 1938 series) #247 (April 1958) |
| Characters | Legion of Super-Heroes [Brainiac 5; Colossal Boy; Shrinking Violet; Saturn Girl; Chameleon Boy; Superboy]; Universo; Rond Vidar |
| Synopsis | Universo steals a time bubble, and the Legionnaires use a student's time cube to travel to the past in search of him. But Rond Vidar returns the Legionnaires to their own time and they stop Universo from taking hypnotic control of the United Planets Inner Council. |
| Genre | superhero |
| Script | Jim Shooter |
| Pencils | Curt Swan |
| Inks | George Klein |
| Reprinted | from Adventure Comics (DC, 1938 series) #349 (October 1966) |
| Characters | Legion of Super-Heroes [Sun Boy; Cosmic Boy; Saturn Girl; Chameleon Boy; Bouncing Boy; Colossal Boy; Brainiac 5; Shrinking Violet]; Legion of Substitute Heroes [Polar Boy; Night Girl; Stone Boy; Fire Lad; Chlorophyll Kid] |
| Synopsis | A group of rejected applicants band together as the Legion of Substitute Heroes and thwart the Plant Men's scheme to take over the Earth. |
| Genre | superhero |
| Script | Edmond Hamilton |
| Pencils | John Forte |
| Inks | John Forte |
| Letters | Joe Letterese |
| Reprinted | from Adventure Comics (DC, 1938 series) #306 |
| Characters | Legion of Super-Heroes [Superboy; Sun Boy; Saturn Girl; Cosmic Boy; Lightning Lad, Triplicate Girl; Mon-El] |
| Genre | Superhero |
| Pencils | Curt Swan |
| Inks | George Klein |
| Reprinted | from Adventure Comics (DC, 1938 series) #300 (September 1962) |
| Characters | Legion of Super-Heroes [Ferro Lad; Superboy; Princess Projectra; Cosmic Boy; Sun Boy; Sun Boy; Brainiac 5; Invisible Kid; Colossal Boy; Chameleon Boy; Saturn Girl]; Fatal Five [Tharok; Emerald Empress; Validus; Persuader; Mano] |
| Synopsis | As a last resort, the Legion decides to enlist the villainous Fatal Five to defend Earth from the Sun-Eater, so the Legionnaires set out separately to collect each of the Fatal Five. Once gathered, the heroes and villains prepare to confront the Sun-Eater, while Tharok plans for the aftermath. When Superboy attempts a final suicide mission to destroy the Sun-Eater, Ferro Lad knocks him out and sacrifices his life to deliver the bomb which destroys the Sun-Eater. |
| Genre | superhero |
| Script | Jim Shooter |
| Pencils | Curt Swan |
| Inks | George Klein |
| Notes | Combines two stories, "To Save a Galaxy" and "The Doomed Legionnaire," with 2 pages removed. |
| Reprinted | from Adventure Comics (DC, 1938 series) #352 (January 1967); from Adventure Comics (DC, 1938 series) #353 (February 1967) |