According to Animato Issues # 26 and # 27, Bruce Timm said this about the episode: "It's Junio's weakest episode. We almost didn't use them after that. It was the first one that came back that really looked totally unlike our show. It was very Japanese. But I'm glad we did use them again, they've done great work. BS&P took a lot out of this show. Originally, the kids were to be victimised by the Sewer-King, but he was not allowed to be mean or torturous to any of them. The impact is watered down. If we were doing it today, we probably would have decided not to do the show."
Director Frank Paur said of this episode, "It was my first episode as director, and there are still things in it that I cringe at. Usually when we get an episode, we get to use a lot of discretion and change things. I wish I had been able to spend more time on that script. Another problem at the time, was that we had storyboard people who made things difficult. I found myself going back two or three times to fix scenes. They didn't quite understand we were shooting for a higher standard. So there was always a constant drain on my time. That whole opening sequence of the kids playing chicken with the train should have been cut. That was what we had to contend with at the beginning of the season. We had these little public service announcements worked into the scripts, a concept we nixed real quick."
This episode has the smallest credited cast of the entire DCAU, with only four names listed.
This is the first episode of the series to show Batman's soft spot for children, displayed when he expresses a desire to kill the Sewer King for his abusive treatment of them.
Batman seemingly kills one of the Sewer King's alligators by forcing its mouth open too far.