Gigan is an enemy to Godzilla who first appeared in Godzilla vs Gigan, where he fought alongside King Ghidorah. Then appeared in Godzilla vs Megalon,where he fought side by side with Megalon. After years off the screen Gigan reappeared in Godzilla: Final Wars. His body was found after being defeated by Mothra 1200 years ago. He was considered Mothras arch enemy, fighting the winged protector for over decades. When Gigan was restored, he came in counter with Gotengo. After the alien cyborg and the warship fought the Gotengo was sent to Antartica to free Godzilla and Gigan chases after them.
When Gotengo freed Godzilla, Godzilla and Gigan brawled it out in the frozen tundra. One atomic breath later Gigan was killed. The mighty cyborg had fallen. But it is not the last we see of Gigan.
Following his decapitation in Antarctica, Gigan was repaired and his arsenal was enhanced. The Xiliens repaired him giving him Buzzsaws in replace of the hook blades. Projectile buzzsaws. And more armor.
Gigan is a alien cyborg and fought along side King Ghidorah and Megalon. His Major enemies are Godzilla and Mothra. He has been fighting Mothra for over 10,000 years. The massive Cyborg is 120 meters tall. He is a heavy one to weighing in at 60,000 tons. He also has the ability to fly in space. And can reach speeds at mach 3.
Gigan has a laser that fires from his forehead. It is a device on the forehead. It was able to be destroyed when Godzilla threw a boulder at it breaking it off. Later in the Final wars it comes from Gigan's eye. And it has a buckshot like effect. When it hits the target it spreads over the targets body. And is officially known as the "Cluster light beam cannon"
Also the cyborg has 2 projectile buzzsaws that come out of his chest,which he shoots at Mothra in Final wars.
In the Showa era he he has hook blades that are able to cut threw the Gotengo and Godzillas flesh. After his repairs he was given buzzsaws that were able to cut Mothras wings.