The Laser Cannon, Core Cannon, Laser Turret, or a variety of other names is the prominent, vehicular protagonist in the Space Invaders series. However, unlike the invaders themselves, it does not appear as frequently, as games like Super Space Invaders '91 and Space Invaders Extreme opt for brand new designs, or at the very least do not feature it as center-stage.
Appearance[]

Laser Cannon Sprite
The Cannon has taken on a variety of appearances since it's inception due to the vague nature of its original sprite. Some games interpret the vehicle as a grounded tank, while others view it as a fighter jet-like craft or a spaceship.
Behavior[]
In the original game, the Cannon is slow in movement and firing rate, yet this doesn't apply to the vast majority of other games. The Cannon is known for a simple move-set, of just moving and firing, but many later entries give the cannon access to powerups.
Upgrades and later versions[]
The later Core Cannon has been upgraded in the sequels later on, starting from Return of the Invaders:
- Xerovy - the Laser Cannon from Return of the Invaders. the remains the same but with enhanced upgrades whenever an UFO is down
- AIT-50/AIF-73CA - Prototype version of the CG30, they are the ones in Space Invaders - Fukkatsu no Hi
- CG30 - the Laser Tank/Space Fighter of Majestic Twelve (MJ-12) - The Space Invaders Part IV, capable of upgrading shots and shield whenever a UFO is Eliminated. This fighter also Liberate the invasion force on Neptune.