The Jet Mobile (ジェットモービル Jettomōbiru?) is a boss from Sonic & Knuckles, as well as its locked-on form, Sonic the Hedgehog 3 & Knuckles. It is fought in the second act of Mushroom Hill Zone after the weather-altering satellite attached to the top of it is destroyed by the player, forcing the boss to surface from being hidden in the ground and retreat with the player in pursuit.