Creed is (allegedly) a quality assurance officer of Dunder Mifflin Scranton, and is a hilarious, fictionalized version of the actor who plays him, Creed Bratton.
Creed is shadowy, old, bad at his job, beyond shady, and only delivers 1-2 lines per episode, but they are often some of the funniest. We love Creed.
Creed: [playing chess] No. IF you do that, I'm gonna do that. IF you do that, I'm gonna do that. IF you do this, I'm gonna do that.
Jim: Well, what if I just do this?
Creed: You don't want to do that.
Creed: I still have my medal from that.
Angela: Do you even have a mattress?
Creed: No, but I still have my medal from that.