To stop him, Morgaine strikes a deal with the . Since only children can exist on Earth under Mordred's spell, she magically transforms Superman, Batman, Wonder Woman, and Green Lantern into eight-year-olds. Retaining their adult memories but possessing the impulsive personalities and half-strength of children, the "Justice Babies" must infiltrate Mordred's "Funseyland" to save humanity. Character Dynamics & "Kid" Personas
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. [S1E5] Kid Stuff
" Kid Stuff " (Season 1, Episode 3 of Justice League Unlimited ) is a fan-favorite "de-aging" story where the world’s greatest heroes are forced to battle as children. To stop him, Morgaine strikes a deal with the
: It is one of three primarily comedic episodes in the first season, alongside "This Little Piggy" and "The Greatest Story Never Told". Character Dynamics & "Kid" Personas The heroes eventually
: Voiced by Kyle Alcazar, he remains the brooding tactician but manifests as a grumpy, "tough guy" child.
The episode is highly regarded for how it adapts the core personalities of the "Big Four" into their younger selves: