Either that, or it's seen in close-up, with the signature outside of the frame. Of course, the presence of an attractive, young, rubber-clad actress was likely regarded as money in the bank, by Warner Brothers. Though it was probably too expensive to film, the script has the Batvehicles engaging both icemen and freezevehicles. The Bathammer fires missles, the Batblade cuts a hole in the ice, etc. More one-liners follow.
Icemen come rapelling down.
Batman makes it to the top, leaving Robin and Batgirl below. Robin yells, causing an avalanche, which buries the bad guys. As scripted, it was probably too expensive to film and, if filmed, would've taken too much screen time. Can I get a matching handbag. You've endangered countless lives.