The SLUG Zombies were a toy line of Scary Little Ugly Guys from across pop culture. They were produced by Jakks Pacific.
Here is great writeup about the history of the line and how it ended over at Little Weirdos.
Come join the Facebook page we created: https://www.facebook.com/slugzombie/
They had also created a checklist poster that you can download and print. Enjoy!
I suppose you have a better thought on the subject?