Banzai Bill Blaster

From the Super Mario Wiki

Banzai Bill Blasters are titanic Bill Blasters in New Super Mario Bros. Like Bill Blasters they slowly shoot Banzai Bills. It is unknown if they were the Blasters that shot Banzai Bills in Super Mario World, but they most likely were. These Bill Blasters only appeared in a few levels of the New Super Mario Bros., and aided the player to the top of the flagpole in that very course. In Super Smash Bros. Melee, the Banzai Bills made their appearance in the fighting arena known as Princess Peach's Castle. Like in Super Mario World, it is unknown whether or not it is the Banzai Bill Blasters that are launching these gargantuan Bills.

They also make an appearance in Super Mario Galaxy on the final level, Bowser's Galaxy Reactor.

Bullet Bills and Blasters
Bullet Bills	Banzai Bill | Biting Bullet Bill | Bombshell Bill | Bouncing Bullet Bill | Bullet Bill | Gira | Glad Torpedo Ted | King Bill | Mad Banzai Bill | Mad Bullet Bill | Missile Bill | Missile Banzai Bill | Pidgit Bill | Sniper Bill | Torpedo Ted
Bill Blasters	Banzai Bill Blaster | Big Bertha | Bill Blaster | Blaster | Bombshell Bill Blaster | Skull Box