The Villain Guild (ヴィラン・ギルド Viran Girudo) is a secret alien organization that takes part in various criminal activities. They are under the lead of an Alien Zetton named Zolin.
The Villain Guild is a crime organization formed by Zolin under the guise of "Zolin Corporation" (ゾリンコーポレーション Zorin Kōporēshon) as a front for him and his affiliates to operate within human society. They had been involved in several alien-related crimes since several years before the start of Ultraman Taiga. The organization was reported to EGIS from the External Affairs X Division, who fight against their members several times and foil their schemes. Even with Zolin arrested, their activities still continued.
- Alien Zetton Zolin (Leader)
- Alien Markind Markind (Formerly)
- Alien Magma Maguma (Formerly)
- Alien Ckalutch
- Cicada Human
- Volk (Formerly)
- Alien Serpent
- Alien Pedan
- Alien Keel
- Alien Bado
- Firearms: The Villain Guild has a wide arsenal of weapons at their disposal. These include regular handguns and rifles to powerful energy blasters.
- Melee Weapons: The Villain Guild members use multiple melee weapons, from swords to bats.
- Spaceship: The auctioning of the Villain Guild takes place on a massive spaceship in orbit around the Earth.
- Monsters: The Villain Guild has monsters under their control.
- Belial Cells: As revealed by Mabuze, the Villain Guild has cells of Ultraman Belial.