Jason drew a kick ass picture for the Verm. Because I have a handful of new monster I am adding a new section to Starter Adventures. They will be a collection of low level guys you can throw into the fray. Here is the Verm given in Swords & Wizardry Core stats.
AC: 5 
Dam: 1d3 (bite), 1d4 (shock)
Special: A successful bite causes 1d4 shock damage (save halves).
The verm are giant rats with a natural ability to channel electricity. They travel within packs of normal giants rats. They are territorial so only one is usually present in the pack, but sometimes there is a mating couple. Verm are slightly more intelligent than normal rats and can use some minor tactics in a fight. One of the more unusual things about verm is when not mating they often bond with an individual. The individual can train the verm and the verm will serve them as the same as a dog. But the territorial nature of the verm makes it difficult for the person to have friends. The verm considers them competition and will look remove it.