Why are only main characters non-human?
Fox: There’s a couple of recurring human characters… Drunken Lighter Guy, our favourite director… umm… Invisible Pete, the professional Mime. He’s in like, every other comic or so. Jalyss: I assure you there is order to the world-sense, but we’re not ready to spill everything just yet. The short answer from the creative standpoint is that we’re commenting on the “real world” with fictional characters, so non-human characters in largely human settings just makes sense for that purpose. Really, I wouldn’t try to read too much into this though, it’s just a gag-a-week/satire strip.