MidoNinger's Shinobimaru

"Dare ja, dare ja?! Da~re, dare ja?! Dare ja, dare ja?! Da~re, dare ja?! Shinobimaru!"

- Summoning announcement

OtomoNin Shinobimaru (オトモ忍シノビマル) is personal OtomoNin, a green-colored version of the original  piloted by, taking the appearance of a giant robot ninja. When piloting Shinobimaru, AkaNinger perches on the left shoulder. Shinobomaru has a variety of different ninjutsu techniques at its disposal; allowing it to create hidden traps or passages or deploying an invisibility cloth to mask his presence. It is also extremely nimble and fast, allowing it to move and attack at great speeds, run up the side of buildings, and being agile enough to leap-frog over enemies.

Shinobimaru forms the control unit in Shurikenjin's default combination and if needed can temporarily separate from the formation to surprise attack the opponent. When other mechas take over its position in Shurikenjin's cockpit, Shinobimaru can optionally become the new formation's left or right arm.

Nin Shuriken
Otomo: Green (Mido): Summons the OtomoNin Shinobimaru. Also completes the helmet for Shurikenjin. This Shuriken, along with the other color-marked OtomoNin Shuriken, are marked with the kanji for "machine" (機).