Home world: Asteroid Din
First Appearance: Ultraseven Episode 32: "The Wandering Planet"
Latest Appearance: Ultraman Taro Episode 25: "Burn On! The Six Ultra Brothers" (animated flashback)
Height: 60 m
Weight: 65,000 t
Category: Kaiju
Affiliation: Beryudora (body part)

Rigger (リッガー Riggā), also known as Riggah, was a kaiju that appeared in episode 32 of Ultraseven.

Subtitle: Mechanism Monster (メカニズム怪獣 Mekanizumu Kaijū)


  • Length: 60 m
  • Weight: 65,000 t
  • Origin: Asteroid Din



Rigger was a kaiju that had thrived on an asteroid-like saucer that was headed for earth that possessed and emitted Electromagnetic Waves. When the Ultra Garrison left to deal with the asteroid, it pulled their ships onto its surface and downed them as it landed. Shortly after scoping out the area and discovering the saucer's origins, Rigger appeared and attacked them. As the Ultra Garrison tried to hold the monster off with their weapons, Dan tried to transform into Ultraseven. However due to the saucer's electromagnetic field, the Ultra Eye would not activate.

Instead, Dan tried to hold off the monster with his newly introduced capsule monster, Agira. Agira was left to battle Rigger on his own while Dan Moroboshi went to dismantle the source of the electromagnetic waves. Agira and Rigger seemed evenly matched but once Rigger downed Agira at an opening, Agira was left to feel the battering of Rigger's tail which forced Dan to recall Agira before any worse harm could be done. Once the electromagnetic fields were disabled, Dan transformed into Ultraseven and battled the monster himself. Ultraseven and Rigger also seemed evenly matched by ultimately it was the ultra who won by decapitating Rigger with his Eye Slugger. Shortly after killing the monster, Ultraseven lured his ship into the Earth's Atmosphere with Rigger's decapitated head, where it exploded thanks to a bomb that was implanted insides its core thanks to the Ultra Garrison.


Alien Emperor taro

Rigger as part of the monster army (between Black King and Snowgon)

  • Rigger was created from a heavily modified Dinosaur Tank suit.
  • Rigger's roar is a reused Zaragas roar.
  • Although not physically seen, Rigger is one of the monsters that makes up Beryudora's left arm in Mega Monster Battle: Ultra Galaxy Legends The Movie.
  • In the middle-to-late 1990s, footage of Rigger was used for the TNT, TBS, and Cartoon Network show Cartoon Planet. Rigger footage was used to the reclusive Mist Dragon in the recurring sketch entitled 'Vacation Spots of the Universe' that would feature special Ultraseven locations being advertised by Space Ghost on Cartoon Planet. In the featured location, Rigger's saucer was called the Flying Island.
  • Rigger was seen in an animated flashback as part of Alien Empera's monster army in episode 25 of Ultraman Taro.
  • Rigger was originally meant to be controlled by an alien race called the Alien Mandala (マンダラ星人 Mandara Seijin), they were eventually cut.
    • In an unused script for episode 32 of Ultraman, it details that the artificial planet of Dine was created by a race called the Alien Mandalas and was on a collision course for Earth.

Powers and Weapons

  • Saucer: Rigger can travel via a saucer.


Ultraseven Kaiju & Seijin
Ultraseven Windom | Alien Cool | Alien Waiell | Human Organism X | Alien Pitt | Eleking | Miclas | Alien Godola | Alien Bira | Alien Pegassa | Alien Quraso | Alien Metron | Alien Chibu | Zero One | Alien Icarus | Alien Wild | Nurse | Alien Spell | Alien Iyros | King Joe | Alien Pedan | Annon | U-Tom | Alien Bell | Blood-Sucking Acari | Gumonga | Suflan II | Alien Bado | Alien Shaplay | Giradorus | Iron Rocks | Alien Mimy | Alien Braco | Alien Talk (Unaired Seijin) | Gabura | Alien Shadow | Alien Kanan | Gandar | Alien Poll | Star Bem Gyeron | Alien Borg | Dinosaur Tank | Alien Kill | Alien Prote | Alien Plachiku | Darii | Rigger | Agira | Shadowman | Alien Uley | Dancan | Petero | Alien Zamppa | Alien Pega | Alien Magellan | Alien Banda | Crazygon | Alien Guts | Aron | Tepeto | Alien Tepeto | Guyros | Nonmalt | Robot Chief | Robot Commissioner | People of the Fourth Planet | Alien Goron | Gorry | Alien Perolynga | Alien Salome | Robot Ultraseven | Alien Hook | Pandon | Reconstructed Pandon | Alien Ghos
Alien Pitt | Eleking III | Alien Metron | Dinosaur | Alien Viyell | Alien Guts | Sulfas | Banderas | Alien Valkryie | Daitekkai | Alien Galo | Alien Kyuloo | Alien Remojo | Bolajo | Dairyuhkai | King Joe II | Nonmalt | Zabangi | Disk Dragon | Alien Pegassa | Alien Godola | Neo Pandon | Alien Garut | Plant Life form | Gaimos
Ultraseven X Galkimes | Alien Makindo | Peginera | Alien Vo-Da | Alien Chamuda | The Soul of Light | Alien Vairo | Vadoryudo | Hupnath | Jyuujin | Saku | Grakyess | Mecha Grakyess