for Batman became more stern, as well as less distinguishable from his voice for Bruce than in the original series. The writers made an effort to keep Batman's dialogue as terse and grim as possible, in order to heighten the contrast between him and the lighthearted supporting cast, this also highlighted his character change from the original series (being more compassionate and optimistic) to this one (being stern, cold and blunt). Batgirl's costume was changed to a look similar to her original outfit from her comic debut in Detective Comics #359 and in her appearance in the Silver Age of comics, which is now a black bodysuit with yellow gloves and boots, but keeps her blue cape and cowl and yellow bat-symbol and utility belt. Her father Commissioner Gordon's appearance was also altered, with a more slender build and a flat-top hairstyle. Producer Paul Dini said that Batgirl would appear in every episode of the new series because "Kenner wants to do a line of toys, we're taking advantage of the publicity from her being in Batman & Robin, and we just love Batgirl". In addition, Melissa Gilbert was replaced by Tara Strong (credited under her maiden name Tara Charendoff) as the voice of Batgirl. While Batgirl did not actually appear in every episode, she did appear more often than Batman's other partners in the series. She also was Batman's main partner in the series rather than Robin, which differs the series from most Batman television series and in the comics (as Robin is usually Batman's main partner). Strong would reprise her role over a decade later in another Batman animated television series, Beware the Batman, and also on the DC Nation short Super Best Friends Forever, Teen Titans Go!, DC Super Hero Girls and in the animated feature Batman: The Killing Joke, which reunited her with Conroy and Mark Hamill. Tim Drake was introduced as the new Robin in the episode "Sins of the Father". However, Dini remarked that "the Tim Drake origin in the comics as written now didn't work for us with him having a father and living so close to Wayne Manor. It seemed to work fine in the comics, but we needed our own little family unit of Batman, Robin, Batgirl and occasionally Nightwing – and Alfred of course". For these reasons, the production team came up with their own origin for Tim Drake, though