This is the listing for the WDW - Pixar Party Mystery Set - 2016 Mystery Box or Bag.
Each box contains two randomly selected pins.
The pins in this series include Mustafa, Evil Dr. Porkchop, Abominable Snowman, John, Construction Foreman Tom, P.T. Flea, Mack, Fritz Chaser, Hamm Chaser, Abominable Snowman Chaser, Gordon the Guard Chaser, Underminer Chaser, Earl Chaser, Hamm Car Chaser, Moonfish School Chaser, and Hamm.