3/17 occipital left-leaning Heterodyne wrench

A sparky tool that Agatha uses to try to establish a détente of sorts with Moloch von Zinzer, in the labs aboard Castle Heterodyne. She's surprised to learn that Moloch, who's not really a Spark, knows exactly what this thing is, whereupon he explains that "mechanics" also need to know about tools -- reasonably enough. This leads directly into Moloch's soliloquy on how he came to blunder into Agatha's life following his service aboard the Vienna 707. It's suspected that this bit of information is going to be important some day.

We never do see this particular wrench put to use, but it's served its purpose.