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The Plug Ball (プラグボール Puragu Bōru) is Plug Man's special weapon from Mega Man 9. Mega Man shoots out spark balls that travel along the terrain to shock enemies, dealing two points of damage. If fired in mid-air, the sparks will fall directly down and will then travel along the terrain upon contact with it. Due to its low weapon energy cost, it can be a decent alternative to the Mega Buster as a primary weapon, though while it is useful for dealing with enemies that cling to walls, such as Sakrets, it is not very effective against aerial targets.

The Plug Ball is Tornado Man's weakness. His movements place him close enough to the walls and the ceiling, making him suseptible to being hit by them without having to aim. It also neutralizes any tornadoes it touches.

Damage Data Chart

Known damage values in units for Mega Man 9.

MM9-PlugBall-Icon Plug Ball
Boss Damage
Concrete Man 1
Tornado Man 3
Splash Woman 1
Plug Man 1
Jewel Man 1
Hornet Man 1
Magma Man 1
Galaxy Man 1
Spike Pushers --
Mega Mech Shark

: 1st Phase

Mega Mech Shark

: 2nd Phase

Mega Mech Shark

: 3rd Phase

Twin Devil 1
Wily Machine No. 9: 1st Phase --
Wily Machine No. 9: 2nd Phase 1
Wily Capsule 3
Fake Man 1
  • For "Spike Shooters" and Wily Machine No. 9's first phase, both bosses do not have data for them because they must be damaged with their own weapon or obstacle -- the Plug Ball cannot inflict damage to them directly.


Two Plug Balls cost one weapon energy unit. It can be fired fifty-six times with a full energy gauge.

Bosses weak against Plug Ball