Gundarguirus (ガンダーギラス Gandāgirasu) is a Terror-Beast kaiju created by Toho that first appeared in Episode 18 of the 1973 tokusatsu kaiju series, Zone Fighter titled Command: "Destroy the Japanese Islands".
Gundarguirus was used by the Garogas as a makeshift bomb. After Professor Tanzawa discovered a powerful energy source that he named PS73, the Garogas managed to infiltrate his laboratory and steal the sample, which they then fed to Gundarguirus. It was then discovered that a comet was approaching the Earth, and that if the comet came too close, the PS73 within Gundarguirus would explode, destroying Japan entirely.
Powers and Stats
Tier: At least 6-C, possibly 6-B
Origin: Godzilla/Zone Fighter
Lifting Strength: Likely Class M
Lifting Strength: Unknown
Striking Strength: At least Large Island Class
Durability: At least Large Island level
Range: Extended melee range due to size; higher via Tusk Laser and Fire Breath
Standard Equipment: None notable
Intelligence: Below Average; animalistic instincts
Weaknesses: Likes to play games with his opponent