Earth Release: Earth Spear

With his earth-element mask, Kakuzu can harden his skin to steel-like quality, protecting him from most attacks. It is, however, easily defeated by a lightning-based ability. While active Kakuzu's skin changes to a darker color and his strength drastically increases.

Trivia

 * Like the rest of Kakuzu's techniques, the name of this techniques comes from the legendary mecha anime . The name Domu was taken from the Gundam MS-09 . The name was given kanji to create the name of this technique.