Broccoli Rob dies in season 7 of The Office:
Andy: Ooh, says here Dan Becker fell off the side of Kilimanjaro in a climbing accident. It appears Dan's Sherpa survived to tell the tale - Oh, my God! Phyllis: What? Is Dan okay? Andy: No, he died. It's Broccoli Rob.
but then he texts Andy in season 8:
Andy: I just got a text from Broccoli Rob - "Boo!" Scared me.
and he is seen again in season 9, played by Stephen Colbert:
Broccoli Rob: I just-- I just started yappin’ about the old days, and I guess the wine coolers were flowing, and, you know, somehow things just got hinky.
So, what happened here?