Creepy Awesome: Rick, the titular ice cream man himself. He's Nightmare Fuel incarnate and loves finding new ways to torture people yet a large part of the fandom love him for those exact reasons. The fact that his exploits are very entertaining to read about doesn't hurt either.
Issue 2 really drives home the point that Drugs Are Bad and will completely ruin your life, but given how much of a problem drugs still are in the modern world it's a very important lesson to have.
Issue 4 shows that abandoning your family is likely to be one of the biggest mistakes of your life and that you might not get a second chance to make amends. Of course, with high rates of children being abandoned or raised by single parents this is another important moral to give in today's world.
Issue 11 rallies against new media over saturation and the increasingly shorter attention spans of people in the modern age. The main character of this issue is a guy who neglected his family and ended up wishing he hadn't gotten so out of touch with them.
Uncanny Valley: This seems to be intentionally invoked by the art style, which is mostly realistic, but just cartoony and stylized enough that it becomes creepy to look at, especially whenever someone smiles or grins.
Narm Charm: The film is as silly and over-the-top as youd expect, being about an evil ice cream man. It still makes for an entertaining watch thanks to Clint Howards funny and surprisingly creepy performance as Gregory.
Nausea Fuel: If the murders don't get to you, Gregory's lacking hygiene control for his products will, with vats of ice cream full of flies and live cockroaches.