Rat King's lair (1987 TV series)

The Rat King's lair is the hideout of the Rat King in the 1987-1996 series. It is located at an abandoned subway station, and first appears in the episode Enter the Rat King where he kidnaps April. In Leatherhead Meets the Rat King, he mixes chemicals there trying to release his zombie gas.

In Were-Rats from Channel 6, the Rat King kidnaps Irma and Vernon to his lair, and try to mutate them into humanoid rats.