Piper[citation needed] (also referred to as the Pipe Master[citation needed]) is a metallic creature found in Mario & Luigi: Superstar Saga and Mario & Luigi: Superstar Saga + Bowser's Minions. He lives in the Warp Pipes of the Pipe House located next to the Beanbean Castle. He gives Mario and Luigi some helpful information about green and yellow Warp Pipes in the Beanbean Kingdom, explaining that green pipes are used to warp to other Green pipes elsewhere in Beanbean Kingdom, while yellow pipes are used for travelling between the seafloor or underground and the surface. He is quite friendly and helpful on the exterior, but he will mumble some annoyed comments upon leaving the brothers.
* Exclusive to Mario & Luigi: Superstar Saga. • ** Exclusive to Mario & Luigi: Superstar Saga + Bowser's Minions. † Enemy, boss, or stat exclusive to the main game. • †† Enemy, boss, or stat exclusive to Minion Quest: The Search for Bowser. • ††† Enemy variants differ in Mario & Luigi: Superstar Saga + Bowser's Minions.