The zombie is that one guy you see when you stay late, on the other side of the workplace. You're not quite sure what he does, or why he's employed. He seems to be very industrious, always typing away at something. You've approached him once. It didn't turn out well - he groaned a little, and then was on his way, leaving you to stand there awkwardly as you decided whether or not to pursue that line of inquiry. Probably better not to.
What does he do all day, anyways? He's always curiously absent during the day time. Perhaps he works the night shift. You should ask, then get a grunt translator. It's a tough language to learn.
You don't know this guy well, either. Maybe even less than the zombie. He's got the night shift too, probably. Well, regardless, he could definitely use a little more skin on his bones. He should consider eating. Maybe he's anorexic?
You've heard he's a blast at parties though. He must be; people always wind up getting hurt after he appears. Maybe it has to do with that bow he always carries around. He probably does archery on the weekends, or something. Indoors. Geez, he's paler than the zombie!
This guy has a real temper on him. You can hear his shouts daily in the workplace. And there was that one time, when you asked him what he did in the workplace, and he exploded (figuratively, of course!). You're not doing that again. But it's weird, almost as if he comes here to shout at people. Why else would he spend all day skipping around?
You've only noticed this guy in the office in early hours of the morning. Early in the morning during those dangerous hallucination periods, when your coffee cup becomes a telephone, your computer becomes a bomb, and this guy becomes delicious looking. Look at the fat on him, he'd sizzle nicely on this grill you have right next to- Wait, never mind. That's your stapler. No, that's your STAPLER. What are you doing? No, no, no! Yes, that's a knife, where are you going? Stop chasing him!