Cathy

Cathy is a human character that appeared within a flashback sequence by Camerawoman during the events of Episode 73. She is the Camerawoman before transformation into a Hardware Head, judging by the fact that she does a double thumbs-up similarly to said Camerawoman, as well as outright confirmed in an Interview from Iron Cameraman, she is of good acquaintances with Dave, who would become Plungerman in the future as well.

Cathy appears as a friendly female human with a cheerful attitude and is shown to be quite optimistic. Through her interactions with Dave, the both of them seem to be quite great friends, or at the very least, acquaintances. However, she tends to have a more serious attitude once something important or grave occurs.