The Hulk, Waldo, and Gumby were just a small sample of the celebrities who showed up at Martin Stadium, Halloween.
More photos can be viewed at the Washington State University Athletics Facebook page.
Pac-12 Commissioner Larry Scott said during his podcast with WSUCougars.com that the favorite costume he saw was the group of students dressed as nuns. Chances are he was referring to these guys:
The answer to Where's Waldo:
Gumby made an appearance: