I'm sure they're synthetic since there are no animals in the underground apparently.This began as something I was gonna sketchdump, but it developed into a comic. Also, I should be writing essays right now and I am not doing that. Why? What is wrong with me? I just couldn't resist the urge to draw.I apologize for the horrible pun. Here is some music for compensation: www.youtube.com/watch?v=I03Hs6…