The Barfatronic Lavachomperis a boss that appears in Wario: Master of Disguise. It is a large robot monster created by Carpaccio to regulate the lava flow in Sweatmore Peak. It also serves as the boss of the area.
During the fight, Barfatronic Lavachomper mainly attacks by shooting small energy balls at Wario or dropping bombs on him. In order to start damaging the Barfatronic Lavachomper, Wario must first transform into Captain Wario and destroy the three pillars at the bottom of the area with his torpedoes. After doing so, the Barfatronic Lavachomper will then use a small hand to drop bombs down onto Wario. Wario must then transform into Genius Wario and punch the bombs into the Barfatronic Lavachomper's eye. The creature will be hurt by this and a toilet will spawn from his mouth. Wario must then transform into Arty Wario and draw a piece of dung into the toliet which will cause the Barfatronic Lavachomper to make a device with a heart on it to appear from it's mouth. Finally, Wario as Thief Wario can tackle it to finally deal damage to the monster. This must be done two more times to destroy the Barfatronic Lavachomper and proceed into Blowhole Castle.