- Actor Allusion:
- Dave Wittenberg's character, Ferro Lad, at one point tells Lightning Lad that he doesn't want to see what's under his mask.
- Dorian Harewood, who voices Dr. Londo in Season 2, also voiced another doctor who had issues with his son. Unfortunately, this one had much less of a "happy ending" vibe to it.
- Common Knowledge: In spite of popular assumption, James Tucker explained on the World's Finest forums that Justice League episode "Far From Home" was not a backdoor pilot for a Supergirl/Legion of Super-Heroes show that got retooled into this Superman/Legion of Super-Heroes show. Legion of Super-Heroes was a demand from the network to create a Superman-centric show to tie-in with Superman Returns. However, Tucker and Dwayne McDuffie have stated that Justice League would have gone off into a space-time adventure direction had it gone another season, so Legion of Super-Heroes may have been partially inspired by those unused plans.
- Executive Meddling: The reason Saturn Girl didn't make as many appearances in Season 2 was because the crew was told to make the cartoon appeal more to boys.
- Keep Circulating the Tapes: While Season 1 was completely released across three DVD volumes, the second season never received any complete home releases. Only the 2-part series finale got released on home video as an extra on The Deathof Superman, and that was a decade since it had aired on television. Finally averted in 2020, when it was announced the second season would not only finally get a DVD release, but the complete series would also be released on Blu-Ray.
- The Other Darrin:
- Recursive Adaptation: The tie-in comic, Legion of Super Heroes in the 31st Century, though it features◊ designs◊ for characters who didn't appear in the show that were closer to the DCAU, including Brainiac (who appeared in Season 2 with a far different design◊) and Martian Manhunter.
- Not only that, the final issue of the comic ended with an appearance of the Pre-Zero Hour Legion to bookend the series.
- Role Reprise: Corey Burton reprises his DCAU role as Brainiac.
- In the French dub, Martha Kent is voiced by Brigitte Virtudes, reprising her role from Smallville.
- Talking to Himself:
- Throw It In!: Courtesy of Batman: The Brave and the Bold director Ben Jones and some Shrug of God from James Tucker, these two shows might take place in a Shared Universe.
- What Could Have Been
- There was to have been a third season. And it was to have been awesome.
- Also, Mon-El was supposed to be in the line-up for Season 2. Instead we got Superman X.
- James Tucker had plans to make Alexis Luthor into The Dragon for Imperiex in season two. She would have later made a HeelFace Turn (out of personal selfishness, of course) and betrayed him, gaining the galaxy's trust and running for a political position. Due to Executive Meddling, however, they had to reduce the number of female characters for most of the season, and the subplot was cut.
- According to James Tucker in an interview with World's Finest Online, had the show continued with a third season, Supergirl would be introduced.
- The Wiki Rule: The Legion of Superheroes Wiki covers the animated series.
Trivia / Legion of Super-Heroes