Rump Command

Rump Command is a large area inside Bowser's tail in Mario & Luigi: Bowser's Inside Story. Once there, Mario and Luigi meet two Evoglobins who carry a plea from Bowser's remaining energy and ask them to revives their host and, in order to do so, the player must board the Boats of Revival and play a mini-game in which they shoot red, green, and blue orbs of adrenaline towards his heart to revive Bowser as well as cause him to grow to gigantic proportions. However, Bowser can only grow when in peril, meaning that Mario and Luigi only need to visit here when Bowser is in mortal danger.

This is also one of the most visited places by Mario and Luigi inside Bowser (4 times), in addition to the Arm Center.