Bullet Biff

Bullet Biffs (originally known as Gira or Gina ) are a species of Bullet Bills found in Sarasaland in the game Super Mario Land. Bullet Biffs were only referred to as such in the North American digital manual for the 2011 port of Super Mario Land to the Virtual Console, 22 years after the original game's release.

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."