This article is about a/an Mirror Monster in Kamen Rider Ryuki.

Steel Giant Magnugiga (鋼の巨人マグナギガ Hagane no Kyojin Magunagiga) is a Mirror Monster that is contracted to Kamen Rider Zolda in Kamen Rider Ryuki.


Magnugiga appears as Zolda's Contract Monster. It resembles a Minotaur and is referred to as the Steel Giant as its size and heavy arsenal gives it the appearance of a mecha. Zolda uses multiple parts of Magnugiga for weaponry. However, unlike all the other Contract Monsters, Magnugiga doesn't seem to be able to move on its own, and is only a robot-like monster. As shown in the movie, Magnugiga never attacked Zolda after he quit being a Rider.



The picture of Magnugiga

Magnugiga, along with every other Mirror Monster, were created from Yui Kanzaki's and Shiro Kanzaki's pictures from when they were younger.

Magnugiga first appeared in Mirror World when Zolda used a Final Vent to destroy another Mirror monster and in the process barely missing both Ren and Shinji.

It also played a pivotal role in the downfall of Jun.

Most of the time however, Magnugiga because of his large size, was used as a shield by Zolda when he was not going on the offensive.

Magnugiga was destroyed by Asakura when it was kicked into the vortex on Genocider's chest.

Rider War

In the Rider War, Magnugiga is seen with Kamen Rider Zolda on top of Zero-Liner as Zolda uses his Final Vent against Decade's Final Attack Ride, but the attack fails and they're destroyed.


  • Shoot Vent: Conjures the Giga Cannon that is made from Magnugiga's legs.
  • Shoot Vent (Secondary): Conjures the Launcher that is made from Magnugiga's arms combined together.
  • Guard Vent: Conjures the Giga Armor shield made from Magnugiga's torso.
  • Guard Vent (Secondary): Conjures the Giga Tector shoulder armor from Magnugiga's knee pads [Never used in series].
  • Strike Vent: Conjures the Giga Horn gauntlet that resembles Magnugiga's head [Never used in series].
  • End of the World (Final Vent): Zolda plugs the Magna Visor into Magnugiga's back and fires all its arsenal at once.


  • Destroyed by: Kamen Rider Ouja's Doomsday
  • Animal Basis: Buffalo
  • Height: 285cm
  • Weight: 510kg
  • Grip strength (Giga Hand aka. left hand): 50t


  • Magnagiga is never shown eating onscreen in the series, this may be due to it being a machine unlike the other contract monsters who seemingly are sentient beings.

See also