The Rat King's lair is a location appearing in the 2012 TV series. Located in an abandoned utility junction beneath Harold Square, it is surrounded by abandoned sewer tunnels, creating the perfect environment for Dr. Victor Falco conduct his unethical biological experiments and create his formidable rodent legion.
The Rat King's lair appeared in all of the episodes that feature Dr. Victor Falco, except for "Monkey Brains".
- "I, Monster" - In the beginning Victor Falco was hidden from the world in a abandoned warehouse, but after the fire and the accident caused in his lab, he moved to the sewer galleries beneath NYC with all of his rat subjects as well.
- "Of Rats and Men" - Falco added electronic cages to his lair so that he could capture several dozen humans for his "rat people" experiements.