Trivia: Among the Golden Age costumes in the Hall of Justice are: Firebrand, Wildcat, Green Lantern (Alan Scott), the Red Bee, the Flash (Jay Garrick), and Sandman. The Amazo android is also on display.
L-Ron: Greetings and salutationisms, Earth champions. I am L-Ron, major domo to the great master. and you are my prisoners.
Captain Marvel: This is Plastic Man's April Fool's joke, isn't it. Okay, Plas. You got us.
Character bios: Despero
Heroes appearing without dialogue: Beast Boy, Lagoon Boy, Black Lightning