Rocket launcher

The rocket launcher, or something similar, is a weapon that exists in each of the Bionic Commando games. It is usually the most powerful weapon in the game.

Arcade

The rocket launcher isn't actually named in the arcade version. It shoots a larger bullet than the normal gun and does more damage.

Like all of the bonus guns in the arcade version, the rocket launcher occasionally parachutes from the sky.

NES

The rocket launcher is the most popular choice of weapon among players of the NES version. It travels the full distance of the screen and does three points of damage while shooting right through most enemies. Even though it only allows one bullet in flight at a time and it can't penetrate armor its ability to destroy almost every enemy in one hit makes it very powerful.

In the meet with enemy sections the rocket launcher still does five damage, but it also travels faster and has the longest range of all any weapon.

The rocket launcher is the reward for beating area 5.

The rocket launcher is needed to enter area 6.

The NES manual refers to this weapon as the "rocket gun".

Game Boy

The Game Boy version calls their weapon the grenade launcher.

The grenade launcher is rewarded after you defeat area 6.

Elite Forces

In Bionic Commando: Elite Forces the weapon is called the pulse cannon. It's more powerful than the normal gun and can penetrate barrels. However, it can only have one bullet in the air at a time.

The pulse cannon is the reward for beating area 11.