Gymaira is a space monster that controls people with its mind-control tongue and sucks their blood. It can also release toxic gas, high-voltage currents, and a powerful monster beam.

After attacking a spaceship belonging to an alien named Sawako Hoshi, Gymaira crash-landed on Earth and hid in an island cave.
When UGM’s Chief Ito arrived to investigate, Gymaira used its monster beam to transform him into Lavras, the Human Monster. The space monster then manipulated both Lavras and its other servant, Daron, the Octopus Monster, to attack Ultraman 80.

Sawako stole explosives from the UGM base and blew up the cave. With its home destroyed, Gymaira went on a rampage, destroying the Terrestrial Defense Forces that came to stop it. Gymaira then fought Ultraman 80, using its raw strength to overpower the Ultra with kicks and throws. When Lavras tried to help 80, Gymaira asserted its dominance by piercing the human monster’s chest with its horn, killing him. However, Gymaira was ultimately destroyed in a massive explosion by Ultraman 80’s Ultra Moonsault Kick.