Further information: The New Batman Adventures and List of Batman animated episodes#The New Batman Adventures
The New Batman Adventures debuted in 1997 as a continuation of Batman: The Animated Series and The Adventures of Batman & Robin. It ran trough 1999 with 24 original episodes being aired. Most of the characters that appeared were carried over from the previous series. Additional characters were added, with most of them being drawn from a wider range of DC Comics comic books. The odd character was created specifically for the show or borrowed from its sister show Superman: The Animated Series.
Read more about this topic: List Of DC Animated Universe Characters