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
Aka Ninger's humanoid Otomonin.

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

Dragomaru
Dragomaru
Ao Ninger'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
Ki Ninger'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
Shiro Ninger's ninken Otomonin, normally seen riding in Byunmaru.

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

Byunmaru
Byunmaru
Momo Ninger's magnetic levitation train 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 Otomonin that assumes robot mode and is the prototype of the other Otomonin.
UFOmaru

Rodeomaru
Rodeomaru
Star Ninger's humanoid Otomonin riding an ATV karakuri machine Bison King Buggy. These were created by Kinji using Yoshitaka's autobiography.

Surfermaru
Surfermaru
A shark-themed submarine Otomonin that assumes robot mode on the Surfermaru Board.
Surfermaru

Lion Haoh Jou
Lion Haoh Jou
A lion/castle-themed flying tank Otomonin, known as the Sky Otomoni. Lion Haoh Jou essence can assume the human form Shishioh while leaving the body.

Hououmaru
Hououmaru
Aka Ninger's Vermillion Bird/glider-themed secondary Otomonin that can combine with other five secondary Otomonin to form Gekiatsu Daioh that can perform the Gekiatsu Fire and Gekiatsu Shot attacks and the Gekiatsu Grand Fever finishing attack. After Lion Haoh and Bison King combine into an exosuit that Gekiatsu Daioh uses, Gekiatsu Daioh pilots Haoh Gekiatsu Daioh that can perform the Haoh Gekiatsu Bomber attack and the Haoh Gekiatsu Number One finishing attack.

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

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

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

Pandamaru
Pandamaru
Momo Ninger's panda/helicopter-themed secondary Otomonin.

Magoimaru
Magoimaru
Star Ninger'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 to assume a robot mode.