Location
Mr. Krabs' secret laboratory is a room that is located under the Krusty Krab. It appears in the episode "Krabby Patty Creature Feature."
Description[]
It is a large laboratory containing a lot of machinery and equipment. Since it is dark inside the laboratory, most of the machinery has a green glow to create light so people can see.
Role in episode[]
It appears when the customers at the Krusty Krab grow tired of eating the same old Krabby Patty, so Mr. Krabs brings SpongeBob to a secret, underground laboratory and makes a new formula for the patty to attract customers with the help of Sandy, thus inventing the Secret Patty.