Batman: The Animated Series: 10 Best Characters Who Only Appeared In One Episode
5. Annie - Growing Pains
Another character who appears in The New Batman Adventures that shines in their only appearance is the character simply named Annie.
Annie is a young girl with amnesia who is saved multiple times by Tim Drake's Robin, as she is trying to escape the man chasing her. As the man chasing her is revealed to be her father, Robin and Annie create an emotional connection as the Boy Wonder has also dealt with his own issues with his father.
As it turns out, Annie is a remnant from Clayface that has become separated, and Clayface has been trying to track her down so they can reunite. Robin refuses to let the two merge once more, as he believes Annie is her own person. However, after a fight with Clayface, Annie merges with Clayface in order to save Robin's life.
Annie's character allows fans to sympathise with this newer version of Robin, as it allows the young crime fighter to deal with his first major bought of grief and sorrow in the series. She also helps shine a light on some of Tim Drake's backstory and how that motivates him to help others.