Mazinger Z
The Mazinger Z (マジンガーZ Majinga Zetto) is the titular mech of Mazinger Z and had appeared in several subsequent series. Following the discovery of Japanium and the creation of Super Alloy Z, the titanic robot was created by Doctor Juzo Kabuto to combat Dr. Hell and his Mechanical Beasts, who desired the metal for their own nefarious purposes. When the doctor was killed, his grandson Koji Kabuto piloted the mech to fight against Dr. Hell. Though some mechas in Tokusatsu and Manga prior to Mazinger also could be piloted internally, in terms of production history, Mazinger Z was the first anime giant robot to be internally piloted leading a series (though earlier manga only mecha's also featured similar concepts), launching the Super Robot genre into existence.
Weapon(s) : Koshiryoku Beam, Rocket Punch, Rust Hurricane, Breast Fire, Mazin Power...