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| Bull's-Eye Bill|
| Koopa Troop|
Bullet Bills (known as Bill Bala in Spanish and Dàntóu Shāshǒu in China) are recurring enemies in the Super Mario series. When shot out of a Bill Blaster, they lock on to any heat signatures they detect and go after their target. Bullet Bills take the shapes of a gun bullet as their name suggests. Their bullet-like bodies are black and have white arms to steer themselves.
Bullet Bills appear as items and enemies in Super Mario MHL.
Bullet Bill appears as the boss of Bonus World 2.
Bullet Bills appear as items in Mario & Nintendo All-Stars Racing 2. Their appearances are like the past Mario Kart games; they make the player turn into a Bullet Bill and ram into other players for 10 seconds.
Bullet Bills appear as projectiles shot from the cannon of the Mariotank, trying to destroy a enemy tank will take 3 Bullet Bills to destroy, destroying strong enemy tanks aquire 5 Bullet Bills to destroy, it is used to defeat Megatank.
Bullet Bills appear in Super Mario Moose as enemies. They shoot out of Bullet Bill launchers and head in a straight path.
Three new Bullet Bills (Freezy, Firework, and Black Hole) are introduced as well as being the focus of the first set of Fire Stars in the game in the world Firesmoked Hills.
Bullet Bills once again appear in Super Mario Moose Deluxe. They act the same as in the previous game.