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Rain Flush

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Rainflushicon
Rainflushicon
Rain Flush
MM4-RainFlush-Art
Mega Man using Rain Flush.
MM4-RainFlush-Sprite

Rain Flush (レインフラッシュ Rein Furasshu?) is Toad Man's special weapon. This weapon creates an acid rain storm that affects all things on the screen (provided they are vulnerable to it), including shielded enemies like Mets and Pakatto 24, and can hit several times before disappearing. In Mega Man IV, it can extinguish the fire in Napalm Man's stage for a short time, and solidify the quicksand in Pharaoh Man's stage. It's also Bright Man's weakness.  Pharaoh Man and Skull Man are semi-weak to the Rain Flush as well.   The weapon can hit Drill Man while he is underground and pierces Skull Man's Skull Barrier.

Damage Data Chart

Known damage values in units for Mega Man 4.

Rainflushicon Rain Flush
Boss Damage
Bright Man 4
Toad Man 1
Drill Man 1
Pharaoh Man 2
Ring Man 1
Dust Man 1
Dive Man 1
Skull Man 2
Mothraya 0
Square Machine 0
Cockroach Twins 0
Cossack Catcher 0
Metal Daddy 0
Tako Trash 1
Wily Machine No. 4 : 1st Phase 0
Wily Machine No. 4: 2nd Phase 0
Wily Capsule 0

Capacity

Rain Flush uses 4 weapon energy units in Mega Man 4 and 1 unit in Mega Man IV. With a full weapon energy gauge, it can be used 7 times in Mega Man 4 and 19 times in Mega Man IV.

Bosses weak against Rain Flush

Other media

Cartoonrainflush

Mega Man getting Rain Flush in the cartoon show.

Mega Man uses the Rain Flush in episode 10 of Ruby-Spears' Mega Man animated series.

Interestingly, both Toad Man and Mega Man use it in the form it takes as a usable weapon- firing a pod straight into the air, which then explodes and produces a cloud that releases the Acid Rain on targets below.

Trivia

  • The Rain Flush can be used as a substitute against Pharaoh Man if one has run out of Flash Stopper, though you'll have to contend with Pharaoh Man's speed.
  • If Rain Flush is used on Wily as he escapes the first battle in Mega Man 4, he will be destroyed, and as a result Mega Man will be stuck in the stage, forcing the player to reset.
  • The Rain Flush (followed by the Gravity Hold, Centaur Flash, Astro Crush, Lightning Bolt and Tornado Blow) is the first weapon in the Mega Man series to damage all enemies on screen regardless of defense.


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