When I started Zombie Roomie I had a different mindset about the characters... I didn't think it was important for them to have last names. I wasn't concerned on how they lived outside of what was shown in the strip. After doing the comic for a while things started to change in how I perceived the world that I had created and I wanted to fix some things. Adding surnames was pretty easy... I've sprinkled them into the strip every once and a while. But having the jobs I wanted various people to have proved harder. In fact, some previous strips were detrimental to the jobs. So I put off letting people know John worked at the morgue and I would just mention that he and George would sneak in after hours.... But I've also gone back on that and I have stories in my plan that require that being established.