Acid Burst, known as Acid Rush (アシッドラッシュ Ashiddo Rasshu?) in Japan, is the Special Weapon that X gains from defeating Toxic Seahorse in Mega Man X3. When fired, it creates a glob of acid which, upon contact with any surface, will split into four smaller acid drops. These little acid drops do not do as much damage, but cover a wider area. X can also fire this weapon straight up or straight down by pushing up or down on the control pad. When charged, X will fire two balls of acid which bounce five times in the direction he is facing. Because this weapon is a liquid, using Acid Burst underwater will cause the acid globs to dissipate the instant the FIRE button is pressed, rendering it completely useless.