Unable to get into Ivo Shandor's mausoleum with Ecto-1, the Ghostbusters are at odds until two statues animate and attack. Egon Spengler realizes they can use the monsters' interdimensional cranial energy source to open the door locks.  The Rookie uses the Capture Stream to wrangle the keyheads off. Once the monsters are dispersed and the coast is clear, the Rookie wrangles the keyheads into the locks with success!
According to Tobin's Spirit GuideEdit
- Category: Class VI Semi-Merged Attractor 
- Type: Corporeal (dispersible)
- Attacks: Melee, Range, Berserk
- Weaknesses: Shock Blast
Closely related to other Bi-Dimensional Attractors, these Golems have been bound to a will greater than theirs to serve as sentries tasked to eternally guard otherworldly portals and gates.
Aside from Shandor's Destructor form and the Juvenile Sloar, these Keyhead Monsters are the largest foes you'll face. Though they are large, easy targets to hit, you have to fend them off in an extremely limited space. Keep ahead of them as you scramble around the Ecto-1 at the center of your mini-battlefield and pound them with Boson Darts. If they get too close, slow them down with your Stasis Stream, then create some distance by sprinting away. After whittling down a Keyhead Monster's P.K.E. to less than 50 percent, engage your Capture Stream and wrangle off the key sitting atop its head. With the key gone, switch back to Boson Darts and take it down.
- Central Park Cemetery