MetalGarurumon's ice attacks are Absolute Zero
Disclaimer
All of this info is taken from the main VS Battles Wikia. Please give the members of the wikia, especially the admins, the respect and credit they deserve.
Summary
Absolute Zero is the point of cold at which enthalpy and entropy hit their minimum level. It is the ultimate form of freezing and in the theoretical situation that someone is exposed to it, their body will be frozen at the atomic level before collapsing under their own mass since the loss of energy causes the atoms to lose their cohesiveness. Due to the nature of the ability working on the atomic level, it can be considered a form of Durability Negation, ignoring conventional defenses unless a character is shown to be able to resist such attacks.