Pluggers

I don't really understand this comic strip. But then again I'm not the only one. From the Comics Curmudgeon:

It’s funny because pluggers aren’t qualified for any job important enough to require a background check! Also, they are covered with ticks. Rule of thumb: if your Pluggers strip reminds the reader too forcefully that its main characters are hirsute, vermin-ridden beast-men, it has gone off the rails a bit.