A shot is fired out of Zero Suit Samus's blaster, which deals a small amount of damage and paralyzes the target. It can be charged to increase the time an opponent is stunned, dealing 4-5% damage when uncharged and 6% when charged.
The paralyze effect caused by the Paralyzer is not affected by knockback resistance. Also, hitting a non-flinch character like Porky with this will cause them to shake as if they were stunned, though they will continue moving unhindered.
Firing a beam just before landing won't produce the Paralyzer SFX, and is referred to as silent laser.
Special Move customization was added in Super Smash Bros. 4. These are the variations:
In Metroid: Zero Mission, on a stealth mission, Zero Suit Samus's only weapon is her "rather useless emergency pistol", which even when fully charged can only paralyze Space Pirates for a few seconds. It is, however, able to destroy Bomb Blocks, which normally are only vulnerable to Morph Ball bombs.
The weapon itself was not referred to as a Paralyzer until Metroid: Other M, which was produced after its Super Smash Bros. debut in Brawl.