The video shows the band battling a group of vampires. Making appearances in the video:
William Beckett and Michael Carden of The Academy Is...
Brendon Urie and Spencer Smith of Panic At The Disco
Schleprok of Gym Class Heroes (all above as vampires)
WarChief, Fall Out Boy's security manager, as a priest
Dirty, Fall Out Boy's special effects/lighting technician, as Stump's information gatherer.
Donovan Berry - El Dorado, AR