I'm also missing the last ratkin, if anyone can help with that... please.
One ratkin is located on the top left of the junk yard. A second (I believe) is located on either the bottom right of the first level of the junkyard or the question mark further up in the same column. The third is in the second part of the junkyard, accessed via the bottom right of the first area. I believe he's somewhere around the middle of the area.
And in regards to "Virile," he's a guest writer. The content he provided in 0.44 can be accessed via the Outdoor Fun area in Bareshade.