Popsugar Entertainment Mad Men Mad Men Halloween Costume Ideas Which Mad Men Character Will You Be For Halloween? October 23, 2015 by Shannon Vestal Robson View On One Page Photo 7 of 9 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 7 Pete Campbell What to wear: A suit, slicked-back hair, and a look of weasel-faced sneakiness. How to act: Shifty, like you've got your eye on the corner office, and you'll do anything to get it. Previous Next Start Slideshow Mad MenHalloweenHalloween CostumesTV