Behemoths are in fixed locations and once killed, they do not respawn. There are 5 of them, located in the following locations:
- Galaxy News Radio building
- Evergreen Mills
- Capitol Building
- Takoma Park (Only accesible through the metro tunels in Vernon Square East)
- Close to Jury Street Metro Station, where there's a derailed train. You need to open the cart cages for the behemoth to appear.