The toughest part of most new series is coming up with characters that the viewer will want to watch for weeks, if not years, on end, and they've already licked that part of it. We'll see if the rest follows.
Although light on laughs, with its spare design and limited animation Unsupervised does create a reasonably cohesive, grimy little world, made tolerable by the absence of actual kids.
You partially feel guilty about criticizing a show that boasts so much talent, is so well-meaning, and yet misses the mark entirely, but I defer to the gurus on this one: Uh–huh-huh-huh-huh, this sucks.