Of course we're going to do this. I said it looked tough, not unbeatable. 
- — Robin
Young Justice Secret Files and Origins #1 is a one-shot with a cover date of January, 1999.
Synopsis for Secret Origins: "Take Back the Night"
Secret leads Young Justice back to the D.E.O. Wabe facility to free other super-powered teens being held against their will.
Appearing in Secret Origins: "Take Back the Night"
Featured Characters:
Supporting Characters:
Antagonists:
- D.E.O.
- Dr. Charles
- Lutwidge
- Batman (As an illusion only)
- Flash (As an illusion only)
- Superman (As an illusion only)
- Wonder Woman (As an illusion only)
- Green Arrow (As an illusion only)
- Green Lantern (As an illusion only)
Other Characters:
- Cameron Chase (Cameo)
- Director Bones
- Claire (Single appearance)
- Casey Kim (Single appearance)
Locations:
- New York
- Adirondack Mountains
- DEO's Wabe Facility
- Adirondack Mountains
Items:
Vehicles:
Synopsis for Day in the Life: "Impulse's Trip to the Justice Cave"
Impulse gets distracted on his way to a Young Justice meeting.
Appearing in Day in the Life: "Impulse's Trip to the Justice Cave"
Featured Characters:
Supporting Characters:
Antagonists:
Other Characters:
- Batman (in a thought bubble)
- Guy Gardner
- Nightwing
- Billy Batson
Locations:
- Alabama
- California
- Fawcett City
- New Jersey
- New York
- Pennsylvania
- Philadelphia
- 61 Flavors Ice Creem Store
- Philadelphia
- Africa
Items:
- The Riddler's jacket
- Trick Boomerangs
- Doctor Polaris' cape
Vehicles:
Synopsis for Lost Pages: "Mighty Endowed"
Agents Fite n' Maad prevent Mighty Endowed from escaping the All-Purpose Enforcement Squad headquarters.
Appearing in Lost Pages: "Mighty Endowed"
Featured Characters:
Supporting Characters:
Antagonists:
Other Characters:
Locations:
Items:
Vehicles:
Synopsis for "Tour of the Justice Cave"
Superboy offers a tour of the Young Justice headquarters in the Secret Sanctuary.
Appearing in "Tour of the Justice Cave"
Featured Characters:
Supporting Characters:
Antagonists:
Other Characters:
- Robin (Narrator)
- Impulse
- Flash (In picture only)
- Martian Manhunter (In picture only)
- Black Canary (In picture only)
Locations:
Items:
Vehicles:
Synopsis for "Timeline"
The D.E.O. chronicles all the activities of Young Justice.
Appearing in "Timeline"
- Appearances not yet listed
Synopsis for "Profile Pages"
D.E.O. files on each member of Young Justice and their major villains.
Appearing in "Profile Pages"
Featured Characters:
Supporting Characters:
Antagonists:
Other Characters:
- Donna Troy (In picture only)
- Etrigan (In picture only)
- Helena Sandsmark (In picture only)
- Wonder Woman (In picture only)
- Bonnie King
- Green Arrow
- Speedy
Locations:
- New York
- Adirondack Mountains
- DEO's Wabe Facility
- Adirondack Mountains
Items:
Vehicles:
