Bullet Biff

Bullet Biffs (originally known as Gira or Gina ) are a species of Bullet Bills found in Sarasaland in Super Mario Land.

Bullet Biffs look like ordinary Bullet Bills but have rockets on their backs. They can be defeated with a single stomp, earning Mario 400 points. They are only found in the last two kingdoms, Easton and Chai. Bullet Biffs are fired out of Bill Blaster-like cannons known as Pipe Cannons, which pop out of pipes in intervals much like a Piranha Plant. The Bullet Biff that comes from a launchpad travels with a perfectly straight trajectory as usual, but also moves at a higher speed than an average Bullet Bill. Some blasters can be used as a stepping stone to reach high areas.

Super Mario Land

 * 3DS Virtual Console manual bio: "Bullet Biff is a determined missile that launches in a straight line. Defeat it by stomping on it from above."