|Home world:||Planet Desimo|
|First appearance:||Ultraman Tiga episode 34 "To the Southernmost"|
|Latest appearance:||Ultraman Tiga Episode 35 "The Sleeping Maiden"|
Subtitle: Biological Weapons (生体兵器 Seitai Heiki?)
A mysterious alien weapon belonged to Alien Desimo along with Guwam. Desimonia was used strictly as the last line of defense to stop Ultraman Tiga and GUTS from stopping a global conspiracy that would grant total power to the aliens of Planet Desimonia. After a short battle the larger weapon merged with the smaller swarm to grow armor over it vital spot. With the arrival of Tiga's human allies, the alien weapon attempted to escape the confines of the Earth Atmosphere and leave for space. Ultraman Tiga and GUTS pursued the techno-organic weapons into space, there, their combined beams destroyed it once and for all.
Despite this, one Smaller Desimonia survived and served its master, Alien Desimo where it participated in Rena Yanase's kidnapping for it to became the alien's new body and it combined with Guwam to pilot it.
- Desimonia's suit was inspired by Bullton from Ultraman.
- Despite appearing to be a spaceship, Desimonia is actually a cyborg as seen when a heart like organ were visible in it. Also, it was revealed that the ship's DNA essence was similar to Alien Desimo, hinting that Desimonia also a half-Alien Desimo.
- The Small Desimonias were called biological Weapons in the episode they debuted.
- Length: 35 m
- Weight: 44,000 t
- Origin: Planet Desimo → Coreomeos Islands
Powers and Weapons
- Little Desimonia spawn: Desimonia can spawn smaller versions of itself from it's body.
- Levitation: Dasimonia can levitate easily with a built-in hover.
- Energy Blast: Desimonia can fire missile-strength blasts of energy from its cannon.
- Armored Skin: Desimonia can cover it's body with metals in order to prevent from attacks.
- Explosion Spin: By spining its body around, Desimonia can cover ground with explosions as large as itself.
- Length: Unknown
- Weight: Unknown
- Origin: Planet Desimo → Coreomeos Island
Powers and Weapons
- Levitation: Small Dasimonia can levitate easily with a built-in hover.
- Energy Blast: Small Desimonia can fire explosive energy blasts from their sides. The Blasts created by these shots can potentially killed a human by one or two hits.
- Spirit form: Small Desimonia can turn itself into spirit-like entity for travel.
- Human Disguise: Small Desimonia can impersonate any human being but unable to copy their clothing.
- Vehicle: A Small Desimonia later served as a vehicle for an Alien Desimo.