| Issue | #1 |
| Published | January 1998 |
| Cover Price | 4.95 USD; 6.95 CAD |
| Pages | 68 |
| Editing | KC Carlson; Frank Berrios (assistant editor) |
| Notes | The cover title is "LEGION OF SUPER-HEROES SECRET FILES AND ORIGINS", but the indicia reads "LEGION: SECRET FILES". |
| Characters | Legion of Super-Heroes [Saturn Girl; Ultra Boy; Cosmic Boy; Apparition; Live Wire; Brainiac 5; Ferro; Triplicate Girl; Invisible Kid]; Koko |
| Genre | Superhero |
| Pencils | Phil Jimenez (signed) |
| Inks | Phil Jimenez (signed) |
| Colors | Patrick Martin |
| Letters | typeset |
| Characters | Legion of Super-Heroes [Spark; Kinetix; Ultra Boy; Live Wire; Cosmic Boy; Leviathan; Gates; Saturn Girl; Andromeda; Element Lad; Invisible Kid; Chameleon; Violet; Brainiac 5; Triad; XS; Star Boy] |
| Genre | superhero |
| Pencils | Alan Davis |
| Inks | Mark Farmer |
| Colors | Patrick Martin |
| Letters | typeset |
| Reprinted | from Legion of Super-Heroes (1989 series) #80 (May 1996) [minus all text and the UPC] |
| Characters | Cosmic Boy; Saturn Girl; Live Wire; R. J. Brande; Triad [as Luornu Durgo]; Tenzil |
| Synopsis | Cosmic Boy, Saturn Girl, and Live Wire foil a second assassination attempt on R. J. Brande |
| Genre | superhero |
| Script | Tom Peyer; Tom McCraw (co-plot) |
| Pencils | Jeffrey Moy |
| Inks | W. C. Carani |
| Colors | Tom McCraw |
| Letters | Pat Brosseau |
| Notes | Details about the founding of the Legion. |
| Characters | Cosmic Boy |
| Genre | superhero |
| Script | Tom McCraw |
| Pencils | Lee Moder |
| Inks | Ron Boyd |
| Colors | Tom McCraw |
| Letters | typeset |
| Notes | background information |
| Characters | Live Wire |
| Genre | superhero |
| Script | Tom McCraw |
| Pencils | Chris Sprouse |
| Inks | Karl Story |
| Colors | Tom McCraw |
| Letters | typeset |
| Notes | background information |
| Characters | Saturn Girl |
| Genre | superhero |
| Script | Tom McCraw |
| Pencils | Jeffrey Moy |
| Inks | W. C. Carani |
| Colors | Tom McCraw |
| Letters | typeset |
| Notes | background information |
| Characters | Triad |
| Genre | superhero |
| Script | Tom McCraw |
| Pencils | Leonard Kirk |
| Inks | Bob Almond |
| Colors | Tom McCraw |
| Letters | typeset |
| Notes | background information |
| Characters | Apparition |
| Genre | superhero |
| Script | Tom McCraw |
| Pencils | Paul Pelletier |
| Inks | Drew Geraci |
| Colors | Tom McCraw |
| Letters | typeset |
| Notes | background information |
| Characters | Shvaugh Erin; Brad Majors |
| Script | Tom Peyer |
| Pencils | W. C. Carani |
| Inks | W. C. Carani |
| Letters | typeset |
| Characters | Invisible Kid |
| Genre | superhero |
| Script | Tom McCraw |
| Pencils | Dan Jurgens |
| Inks | Norm Rapmund |
| Colors | Tom McCraw |
| Letters | typeset |
| Notes | background information |
| Script | Tom McCraw |
| Pencils | Jeffrey Moy |
| Inks | Philip Moy |
| Characters | Xs |
| Genre | superhero |
| Script | Tom McCraw |
| Pencils | Humberto Ramos |
| Inks | Wayne Faucher |
| Colors | Tom McCraw |
| Letters | typeset |
| Notes | background information |
| Characters | Chameleon |
| Genre | superhero |
| Script | Tom McCraw |
| Pencils | Ron Boyd |
| Inks | Ron Boyd |
| Colors | Tom McCraw |
| Letters | typeset |
| Notes | background information |
| Characters | Brainiac 5 |
| Genre | superhero |
| Script | Tom McCraw |
| Pencils | Lee Moder |
| Inks | Ron Boyd |
| Colors | Tom McCraw |
| Letters | typeset |
| Notes | background information |
| Characters | Violet |
| Genre | superhero |
| Script | Tom McCraw |
| Pencils | Philip Moy |
| Inks | Ray Kryssing |
| Colors | Tom McCraw |
| Letters | typeset |
| Notes | background information |
| Characters | Spark |
| Genre | superhero |
| Script | Tom McCraw |
| Pencils | Jeffrey Moy |
| Inks | W. C. Carani |
| Colors | Tom McCraw |
| Letters | typeset |
| Notes | background information |
| Characters | Kinetix |
| Genre | superhero |
| Script | Tom McCraw |
| Pencils | Barry Kitson |
| Inks | Barry Kitson |
| Colors | Tom McCraw |
| Letters | typeset |
| Notes | background information |
| Characters | Cosmic Boy; Brainiac 5; Gates; Spark; Saturn Girl; Ferro |
| Genre | superhero |
| Script | Tom Peyer |
| Pencils | Todd Nauck |
| Inks | Lary Stucker |
| Letters | Albert DeGuzman |
| Characters | Star Boy |
| Genre | superhero |
| Script | Tom McCraw |
| Pencils | Jason Armstrong |
| Inks | Ron Boyd |
| Colors | Tom McCraw |
| Letters | typeset |
| Notes | background information |
| Characters | M'onel |
| Genre | superhero |
| Script | Tom McCraw |
| Pencils | Mike Collins |
| Inks | Drew Garaci |
| Colors | Tom McCraw |
| Letters | typeset |
| Notes | background information |
| Characters | Element Lad |
| Genre | superhero |
| Script | Tom McCraw |
| Pencils | Colleen Doran |
| Inks | Colleen Doran |
| Colors | Tom McCraw |
| Letters | typeset |
| Notes | background information |
| Characters | Gates |
| Genre | superhero |
| Script | Tom McCraw |
| Pencils | Jason Armstrong |
| Inks | Ron Boyd |
| Colors | Tom McCraw |
| Letters | typeset |
| Notes | background information |
| Characters | Ultra Boy |
| Genre | superhero |
| Script | Tom McCraw |
| Pencils | Cully Hammer |
| Inks | Cully Hammer |
| Colors | Tom McCraw |
| Letters | typeset |
| Notes | background information |
| Characters | Umbra |
| Genre | superhero |
| Script | Tom McCraw |
| Pencils | Phil Jimenez |
| Inks | Phil Jimenez |
| Colors | Tom McCraw |
| Letters | typeset |
| Notes | background information |
| Genre | superhero |
| Script | Tom McCraw |
| Pencils | various |
| Inks | various |
| Letters | typeset |
| Notes | A recap of Legion adventures, sorted by a report number that matches issue numbers in the real world. |
| Characters | Sun-Eater; Comet Queen; Lume; Chameleon; Sister Andromeda; Atmos; Triad; M'Onel; Superboy [Kon-El]; Mordru; Thunder; Supergirl; Pr'n TinG Er'rr; Validus; a Brain Globe; Empress; Buck Bond; Evisceratronic; Scavenger; Slipstream; Starfinger; Chronos; Dirk Morgna; Konk; Aven; Dragonmage; Violet; Ultra Boy; Apparition; Insect Queen; Tharok; Mano; Persuader; C.O.M.P.U.T.O.; Sklarian Raider; Monstress; Color Kid; President Jeanne Chu; Beast Boy; Fire Lad; Night Girl; Evolvo; R.J. Brande; Tiffany Cross; Cosmic Boy; Saturn Girl; Live Wire; Lightning Lord; Invisible Kid; Marla Latham; Roderick Doyle; Quicksand; Mysa; Tomb; Holdur; Khund Warrior; Composite Man; Warden; Brawler; Nara Minsork; Leland McCauley; Winema Wazzo; Gigi Cusimano; Science Police Officer Deacon; Cannus; Sensor; Chlorophyll Kid; Kid Quantum [Jazmin Cullen]; Splitter; Ferro; Star Boy; Dreamer; Element Lad; Gas Girl; Rond Vidar; Karate Kid; Spider Girl; Particon; Inferno; Polar Boy; Tenzil Kem; Stone Boy; XS; Kinetix; Dr. Ryk'rr; Caress; Bandarkat; Titanor; Bur Rac; Gates; Spark; Umbra; Brainiac 5; Koko; Shvaugh Erin; Magno; Radion; Chuck Taine; Impulse; Atharamites; Roxxas; Dr. Gym'll; Lori Morning; Mantis Morlo; Phantom Lad; Density; Ze Tongue; Cherry Bomb; Time Trapper; Pulsar Stargrave; Emerald Eye; White Triangle Gang; Tangleweb; Proty |
| Genre | superhero |
| Pencils | Phil Jimenez (signed) |
| Inks | Phil Jimenez (signed) |
| Letters | typeset |
| Notes | A pinup of all the supporting Legion cast, and a key to them. The title is from the table of contents. |
| Reprinted | in Legion of Super-Heroes: 1,050 Years of the Future (DC, 2008 series) #[nn] [pages 1-2] |