Take the mightiest super-heroes on Earth — each an invincible champion of justice — band them together in a common cause against crime and evil — and you have the Justice League of America!
- Justice League of America: The Martian Chronicles, Chapter 3: The Secret Origin of J’onn J’onzz (J’onn J’onzz guest stars via flashback in 1946)
- Justice League of America: The Martian Chronicles, Chapter 4: The Red Brotherhood (J’onn J’onzz guest stars via flashback in 1953)
Part 4 of The Space-Time Gambit
published July 12, 2000
The Lord of Time sends several mind-controlled members of Earth-Two’s All-Star Squadron to battle the Justice League of America during the team’s early days. And while they soon break the spell and team up for the first time, only to forget it ever happened soon afterward, one question remains: What was it all for?
published March 11, 2002
When Green Arrow joined the Justice League of America, the team helped an exiled warrior from another world overthrow his planet’s cruel dictator. But did their actions have repercussions they did not expect? The ace archer and the Martian Manhunter find out!
published October 2, 2001
The JLA is in trouble when the evil mastermind known as the Key takes out half the League right before a public appearance vital to national security! One way or another, all ten members must be present — and the remaining Leaguers call on some very special help to serve as their missing members’ stand-ins!
- Jonny Double: Times Past, 1978: Disappearing Act (Zatanna guest stars)
- All-Star: Times Past, 1969: Aquarius Redux, Chapter 1: Astro Smash (Atom and Justice League of America guest star on Earth-2 in 1978)
- The Brave and the Bold: Black Canary and Starman: Times Past, 1965: Wings and Stars, Chapter 2: Blackmail (Red Tornado guest stars on Earth-2 via flashback in 1969/1978)
- Legion of Super-Heroes: Times Past, 2979: Ghost Story, Chapter 3: Ghosts of New Mars (Martian Manhunter guest stars via time travel in 2979)
- Legion of Super-Heroes: Times Past, 2979: Ghost Story, Chapter 4: Mordru’s Curse (Martian Manhunter guest stars via time travel in 2979)
- Justice Society of America: Times Past, 1972: Time, See What’s Become of Me? (Red Tornado guest stars on Earth-2 in 1972/1979)