Toxic damage is inflicted when a monster is exposed to acids or corrosive elements. Toxic damage impairs the normal function of the affected objects- be they organic or synthetic. Toxic damage often continues to burn long after the initial exposure, as the corrosive elements work their way in. The best way to withstand a toxic weapon is to have a smooth, dense exterior surface. Kaiju who absorb elements from their environment, especially aquatic Kaiju, tend to be especially vulnerable to Toxic damage.