Home world: Earth (Heisei Seven Universe)
First appearance: Heisei Ultra Seven Episode 2 "From Earth Forever (1998)
Latest appearance: None
Height: 50 m
Weight: 47,000 t
Category: Kaiju
Affiliation: Alien Guts
Roar(s): TBA

Sulfas (サルファス Sarufasu?) is a kaiju introduced in the 1990's Ultraseven series.

Subtitle: Sulfur Monster (硫黄怪獣 Io Kaiju?)


  • Height: 50 m
  • Weight: 47,000 t
  • Origin: Underneath Fudogatake


Ultraseven From Earth ForeverEdit

An underground monster, Sulfas was captured and altered by sulfur breeding bacteria created by Alien Guts, this bacteria turned the monster rapid and required it be controlled by direct brainwave manipulation. This was done to use it gas to turn human into sulfur humans as part of Guts' plan to take over Earth. Hidden beneath a complex, it arose when the TDF and the Ultra Garrison attacked the base. It was met by Ultraseven, under the control of its master it was able to counter the Ultra Crusader, withstanding even the Wide Shot. Sulfas covered the sky with Sulfur clouds cutting of Seven from his power source. Only the maneuvers of the Ultra Hawk, punching a hole in the clouds allowed Seven to destroy Sulfas with a charged Wide Shot.


  • Suit Actor: Hiroyuki Okano

Powers and AbilitiesEdit

  • Burrowing: Sulfas can burrow at high speeds.
  • Durability: Sulfas could withstand a normal Wide Shot from Seven.
  • Sulfur Vapour: Sulfas can expel high temperature sulfur gas that is lined with bacteria made by Alien Guts. These gases can infect humans and covering the sky with darkness to cut Ultraseven's connection with the Sun.


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 | Alien Bado | Alien Shaplay | Giradorus | Iron Rocks | Alien Mimy | Alien Braco | 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

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