Otomonin
The Otomonin are mecha created by Yoshitaka using alien technology that are normally hidden in the city until summoned by the Ninningers using their Ichibantou in conjunction with the Otomonin Shuriken for a summoning jutsu. The Ninningers' secondary Otomonin are created by themselves, giving life to them with their own spirits. The Otomonin can also combine through Shuriken Combinations.

Shinobimaru
Shinobimaru
Takaharu's humanoid ninja-themed Otomonin.

Height: 21.6m
Width: 9.7m
Length: 8.1m
Weight: 200t
Speed: 500km/h
Power: 300

Dragomaru
Dragomaru
Kato's dragon Otomonin, able to breathe the Drago Fire at its opponent and form the Drago Tornado around its opponent.

Height: 23.7m
Width: 26.8m
Length: 37.3m
Weight: 300t
Speed: 600km/h
Power: 450

Dumpmaru
Dumpmaru
Nagi's dump truck Otomonin, able to toss the Dump Makibishi at its opponent. Dumpmaru forms the torso in the Shurikenzin formations, normally forming the left arm unless an auxiliary mecha take Shinobimaru's place in the formations.

Height: 16.7m
Width: 18.3m
Length: 22.6m
Weight: 400t
Speed: 300km/h
Power: 600

Wanmaru
Wanmaru
Fuka's ninken-themed Otomonin, normally seen riding in Byunmaru.

Height: 12.4m
Width: 3.6m
Length: 18.6m
Weight: 100t
Speed: 400km/h
Power: 150

Byunmaru
Byunmaru
Kasumi's maglev-themed Otomonin, able to toss the multiple Byun Shuriken at its opponent.

Height: 8.8m
Width: 7.8m
Length: 76.0m
Weight: 500t
Speed: 700km/h
Power: 750

Paonmaru
Paonmaru
An elephant Otomonin that uses its trunk for its Paon Jet vacuum attack and assumes robot mode.
Paonmaru

UFOmaru
UFOmaru
A flying saucer-themed Otomonin that is capable of assuming a robot mode and is the prototype of the other Otomonin.
UFOmaru

Rodeomaru
Rodeomaru
Kinji's humanoid bull rider-themed Otomonin that rides the ATV/bull/karakuri machine-themed Bison King Buggy. These were both created by Kinji using Yoshitaka's autobiography.

Surfermaru
Surfermaru
A shark-themed submarine Otomonin that assumes robot mode on the Surfermaru Board. A shark/submarine-themed Otomonin capable of assuming a namesake-themed robot mode equipped with the Surfermaru Board.
Surfermaru

Lion Haoh Jou
Lion Haoh Jou
A lion/castle-themed Otomonin that is also known as the Sky Otomonin and assume its robot mode Lion HaOh, which is armed with the twin Big Shuriken and can perform the Big Shuriken Crash attack and the Lion Chozetsu Slash. Additionally, Lion HaOjo's essence can assume a human form named Shishioh.

Hououmaru
Hououmaru
Takaharu's Vermillion Bird/glider-themed secondary Otomonin.

Seiryumaru
Seiryumaru
Kato's Azure Dragon/motorcycle-themed secondary Otomonin.

Genbumaru
Genbumaru
Nagi's Black Tortoise/tank-themed secondary Otomonin.

Byakkomaru
Byakkomaru
Fuka's White Tiger/4WD vehicle-themed secondary Otomonin.

Pandamaru
Pandamaru
Kasumi's panda/helicopter-themed secondary Otomonin.

Magoimaru
Magoimaru
Kinji's carp/submarine-themed secondary Otomonin.

Dinomaru
Dinomaru
A tyrannosaurus Otomonin that assumes robot mode. It is originally a being called the "terrible dragon", which is the cursed form of Tatsunosuke Hakkaku awoken by Juza Yumihari just after Tatsunosuke is freed from the curse that turned him into a humanoid dinosaur. Shinobimaru removes the terrible dragon's horn, separating Tatsunosuke from it and bringing forth the Otomonin's true self.
Dinomaru

Tridoron
In the film Super Hero Taisen GP: Kamen Rider 3, Kamen Rider Drive's vehicle is temporarily enlarged and converted into an Otomonin itself, capable of assuming a robot mode.