Metropolis is a major planet in the Ratchet & Clank series, it is one of the areas in PlayStation Move Heroes.
Ratchet and Clank were defeating a non-Drophyd enforcer. Clank suggested on how to defeat him: hitting him on his knee joint. Ratchet defeated him on the knee joint and it was successful but it began to fall on the ground. It was stopped and Ratchet realized that it was unusual. Then Clank sucked down through a wormhole. Ratchet rescued him but they got sucked through it.
Later, they returned back to Metropolis but Ratchet forgot the Drophyd but it doesn't fall. Clank talked to Bentley via a communication system except for Daxter, who was slipped to a rock and relaxed.