The Space Plant (宇宙植物 Uchū Shokubutsu) is a parasite organism that took over Tetsuon.
Subtitle: Parasitic Life Form (寄生生命体 Kisei Seimei-tai)
The Space Plant was a virus that the kid Tetsuo ate when it was in a seed after its UFO accidentally got knocked down by a baseball. At first, Tetsuo was happy that the parasite turning him into Tetsuon was a great improvement on his life, but when the consequences became severe, the kid couldn't take it anymore and begged for everything to be back to normal. Takeshi Yamato decided to transform into Ultraman 80 and he shrank himself into microscopic size and traveled into the monster-kid's stomach to fight the virus at hand. Both sides held their own against each other, making it an evenly matched fight. In the end, 80 defeated the monster by using his Succium Beam on him, resulting in his defeat and Tetsuon reverting back into a child.
- Actor: Tomohiro Sato
- Design: Osamu Yamaguchi's Assistant
- Height: Unknown
- Weight: Unknown
- Powers and Weapons
|Ultraman 80 Kaiju|
|Crescent | Gikogilar | Hoe | Zandrias | Alien Bam | Mechagiras | Abdolaars | Noiseler | Tabra | Gabishale | Jakki | Aruma | Zuruzla | Medan | Alien Vibros | Gora | Alien Gorgon | Saramandora | Zarudon | Myu | Devilon | Alien Ruria | Sawako Hoshi | Lavras | Daron | Gymaira | Gaus | Okorin Ball | Alien L85 Zuckal | Gamos | Underground Men | Queen Einus | Gomora II | Amoeza | Alien Fantas | Robo-Fo | Argon | Akuzone | Gera | Alien Argo | Val | Zakira | Cathy | Alien Zatan | Zatan Silver | Zora | Barrack Ship | Gazera | Angoras | Fire-Draco | Guwaganda | Baltan Warship | Alien Baltan V | Ghostdon | Tetsuon | Space Plant | Jihibikiran | Barebadon | Zurasuimar | Alien Galagala | King Galtan | Delusion Ultraseven | Alien Baltan VI | Marjin | Red King III | Glovusk | Idatenran | Plazma | Minazma | Margodon|