1 Whopper - Altar Corridor. In the room at the end of the crawlspace containing the rotating blades that leads to the
Zombie holding the
Red Eye.
4 Whoppers - Underground Lab. In the area that has all of the half-open gates, you will encounter Whopper's in several of the sections, including one wading around in the nearby pool, and another will drop when you reach the far side after using the
Laboratory Key.