Maguma's name literally means "magma", which could be a reference to how Maguma is weak to high temperatures.
Maguma looks like a giant brown walrus with yellow eyes, pale tusks, smooth skin, and no visible hair. Maguma also lacks a tail.
Maguma first appeared when it was awakened by missile fire at the North Pole. Maguma attacked the base and it went home to its valley. A VTOL aircraft was sent to kill Maguma, and it buried it under a pile of rocks. Maguma broke out of the rocks and attacked again. The aircraft attacked Maguma with energy beams, killing it.
- Main article: Gallery:Maguma.
- Just like Ebirah, Maguma was originally of Godzilla's allies for Destroy All Monsters, but was replaced by Gorosaurus, Minilla and Anguirus.
- It is thought that Tsuburaya Productions, who last used the suit, damaged it beyond repair when Maguma was used as the Ultra Q monster Tadora.