Note: This question refers to content only available in beta. As of stable 1.0 version of the game, this item is no longer available
I'm trying to build the Inactive Robot, which requires me to build a Robot Head. Only, to build the Robot Head, it turns out I need to get my hands on a Superior Brain. I've been running around Sector B killing monsters and ape-men alike, but when I use the Brain Extractor on them, I just keep getting Inferior Brains.
Where can I find a Superior Brain?