"Justice League Unlimited" Kids' Stuff (TV Episode 2004) - IMDb
The episode is highly regarded for how it adapts the core personalities of the "Big Four" into their younger selves:
The episode ends on a poignant note regarding . While Diana reflects that it was "kind of enjoyable" to be a kid again, Bruce grimly replies, "I haven't been a kid since I was eight years old," referencing the age he was when his parents were murdered. Trivia & Production [S1E5] Kid Stuff
The sorceress seeks the Amulet of First Magic for her son, Mordred . However, Mordred betrays her, steals the amulet, and uses its power to banish every adult on Earth to a shadow dimension so he can rule a world of children forever.
: Voiced by Shane Haboucha, he is portrayed as a naive, enthusiastic "farmboy" who is eager to help. "Justice League Unlimited" Kids' Stuff (TV Episode 2004)
: Voiced by Marc John Jefferies, he uses his ring to create "cool" constructs, including a mask resembling the comic character Kyle Rayner. Themes and Resolution
The heroes eventually trick Mordred by taunting him into using his magic to become an adult so he can finally defeat them. Because he becomes an adult, his own spell banishes him to the shadow dimension, breaking the enchantment over Earth. However, Mordred betrays her, steals the amulet, and
: Voiced by Dakota Fanning, she acts as a bossy, responsible older sister who struggles to hide a clear childhood crush on Batman.