Season 3, Episode 10 - "The Apprentice"
Inspired by the Batman/Batgirl partnership, the Joker decides to recruit his own sidekick, a classmate at Barbara's school, and eliminate Batgirl and Batman.
Inspired by the Batman/Batgirl partnership, the Joker decides to recruit his own sidekick, a classmate at Barbara's school, and eliminate Batgirl and Batman.