Sadomaru 22 (サド丸22号) is Okita Sougo's largest and strongest beetle pet kabuto mushi aka Rhinoceros Beetle. It is a gigantic specimen which he used in his battle against the Shogun's normal-sized pet beetle. Sadomaru 22 was defeated by Gintoki.
Sadomaru 22 is a giant beetle.
Strength & Abililties
This creature may be of alien origin as it has features not common to beetles on Earth, such as its immense size and the fact that it shoots laser beams (or Sado Beams) from its eyes.