Welcome to Adventure(s) Time's forty-first installment, examining classic animated series and their tie-in comic books. Gravity Falls Poland requested this pairing, sending us all the way back to the debut issue of The Batman Adventures. Then, an early Penguin appearance in Batman: The Animated Series. If you have any suggestions, please let me know in the comments.
It's possible some have forgotten Batman was conceived as a follow-up to the release of 1992's Batman Returns, which featured Penguin and Catwoman as the main villains. This required direct approval from director Tim Burton when it came to Penguin and Catwoman's designs, and some concern within Warner Brothers about the cartoon possibly veering too far from the merchandised images of the villains, images that would be everywhere in 1992.
Bruce Timm has indicated he wasn't overly thrilled with this process, but found Tim Burton easy to work with. (His past as an animator giving Burton an understanding of the creators' intent.) Ultimately, the Batman Returns influence on the series is responsible for Penguin's long hair and a blonde Catwoman. Neither element survived the show's revamp in 1997.
Since Penguin and Catwoman were the big guns that year, it's understandable they're the villains for the first two issues of Batman Adventures. (And why the preview episode of Batman: The Animated Series starred Catwoman.)