|Home world:||Dimension X|
|First appearance:||Ultraseven episode 18: "Escape Space X (1968)|
|Affiliation:||Alien Bell (master)|
Beryudora (body part)
Subtitle: Space Spider (宇宙蜘蛛 Uchū Kumo?)
- Height: 3 m
- Weight: 20 kg
- Origin: Space X
An alien spider-like creature that lived within the Bell alien’s Space X, one of these creatures attacked Amagi and Soga, two members of the Ultra Garrison. As it spewed a choking blue gas, the pair managed to kill it with their laser guns. Another one of the same species, or perhaps the same one from earlier, crawled into attack Amagi and Soga while they were ensnared by Sulfan. When Anne and Dan arrived, the Sulfans were destroyed and Dan and Gumonga fought, Dan throwing the arachnid to the ground and killing it with a shot to the mouth.
- Gumonga has a similar name to the Toho kaiju Kumonga, who is also a giant spider.
- Although not physically seen, Gumonga is one of the monster that makes up Beryudora's Left Arm in Mega Monster Battle: Ultra Galaxy Legend The Movie.
- Gumonga's shrieks are re-used from Kamacuras and Ebirah of Toho Fame.
Powers and Weapons
- Burrowing: Gumonga can burrow beneath the ground until it finds a susceptible victim.
- Choking Gas: Gumonga can spray aqua-colored gas from the three holes near his mouth that will choke whatever inhales it.
- Pincers: Gumonga's front legs have pincers ideal for penetration.