Bullet Bill

Bullet Bills are a bullet-like enemies in the ' series that are shot from tall cannons called Bill Blasters'''. A Bullet Bill usually follows a straight direction until it hits something or flies off-screen. A stronger variant, known as a Bull's-Eye Bill or a Heat-Seeking Bullet Bill, moves slower, but homes in on the player. In the original games, it is completely red, but in Super Smash Flash 2, it is only differentiated by its eyes.

As an Assist Trophy
Upon getting summoned, a Bill Blaster will appear. After a short time passes, the Bill Blaster will launch a Bullet Bill, which travels moderately slowly, and homes on the nearest opponent.

After a Bullet Bill hits an opponent or reaches the blast line, the Bill Blaster will launch another Bullet Bill. The bullets can be launched from either side of the Bill Blaster, and a total of six Bullet Bills will be spawned.

As an enemy
Bullet Bills were originally confirmed by the DOJO!!! as an enemy in Adventure mode's Hard and Insane difficulties. However, due to the newer dojos do not confirming it, its current confirmation status is unknown.