Running through the yellow cloud will cause the player to run quickly and running through the purple cloud will cause the player to go even quicker much like the Overdrive specialist ability or the spores shot by the KT-4 on Zetsubou No Shima.
The weapon consists of the GKZ-45 on the left, which shoots yellow clouds of energy that slow down zombies, and the Ray Gun Mark lll on the right, which shoots thinner versions of the Ray Gun projectile which do not cause splash damage.