The comic book Batman Beyond 2.0 is set two years after the end of the cartoon series Batman Beyond. The future Batman, Terry McGinnis, has partnered with the grown up Dick Grayson, joining the series as his mentor, rather than the elderly Bruce Wayne from the animation.
The current arc explains why Dick Grayson was never seen in the TV show. And also what the rift between Dick and Bruce was. And how it involved Barbara Gordon, Batgirl.
The cartoon suggested in one episode that Bruce Wayne had a relationship with Barbara Gordon at one point.
However last week's comic went a bit further.
Not only did we learn about Barbara and Dick's blossoming relationship back in the day… but that the timing was rather awkward.
Basically, Batman got Batgirl pregnant while she was still involved with Dick Grayson. And rather that let Barbara tell Dick, Bruce got in there first. Telling Dick about he and Barbara…
But also about Barbara's current condition.
At which point Barbara Gordon took to the streets, engaged in a battle and, it is certainly suggested at the end of the last issue, had a miscarriage.
So you can see why things in the future Batcave may have gotten a little… tense?
Anyway, from that point on, Batman always added these to his utility belt.