When global catastrophe strikes, the World's Greatest Super Heroes answer the call to join Justice League. Justice League works together as a team to overcome a dangerous array of intersteller invaders and world conquering megalomaniacs.
| Actor | Role |
|---|---|
 Kevin ConroyBatman (voice) | Batman (voice) |
 Susan EisenbergWonder Woman (voice) | Wonder Woman (voice) |
 George NewbernSuperman (voice) | Superman (voice) |
 Carl LumblyJ'onn J'onzz (voice) | J'onn J'onzz (voice) |
 Max BrooksHowie (voice) | Howie (voice) |
 Maria Canals-BarreraHawkgirl (voice) | Hawkgirl (voice) |
 Phil LaMarrGreen Lantern (voice) | Green Lantern (voice) |
 Gary ColeJ. Allen Carter (voice) | J. Allen Carter (voice) |
 Michael RosenbaumFlash (voice) | Flash (voice) |
 Jason MarsdenSnapper Carr (voice) | Snapper Carr (voice) |
 Kevin Michael RichardsonGeneral Wells (voice) | General Wells (voice) |
 Clyde KusatsuJapanese Ambassador (voice) | Japanese Ambassador (voice) |
 Corey BurtonBald Tech (voice) | Bald Tech (voice) |
 Susan SullivanHippolyta (voice) | Hippolyta (voice) |