Banzai Bills are recurring enemies in the main Mario series, occasionally appearing as obstacles in the Paper Mario series. Banzai Bills are larger more stronger versions of Bullet Bills. They make their Paper Mario debut in Paper Mario: Sticker Star, only being found in the level Bowser Jr.'s Flotilla (6-2). They are shot out of a large Bill Blaster near Bowser Jr., and cannot be damaged nor destroyed. The Bill Blaster can be removed by using Paperize however. They reappear once more in Paper Mario: Color Splash, first appears in the level Sunglow Ridge. One falls near Mario, and releases Black Paint all over the level. Several more can be seen in Black Bowser's Castle being shot out of cannons. If Mario is hit by one of these, it will take away 30 HP. Like Sticker Star, they cannot be destroyed.
A Banzai Bill from Paper Mario: Sticker Star.