MechaGodzilla

Mechagodzilla is a fictional mecha character that first appeared in Jun Fukuda's 1974 kaiju film Godzilla vs. Mechagodzilla, the 14th film in Toho's Godzilla franchise. In its debut appearance, Mechagodzilla is depicted as an extraterrestrial villain that confronts Godzilla. In subsequent iterations, Mechagodzilla is usually depicted as a man-made weapon designed to defend Japan from Godzilla. In all incarnations, the character is portrayed as a robotic doppelgänger with a vast array of weaponry, and along with King Ghidorah, is commonly considered to be an archenemy of Godzilla. [Wikipedia]