Go Nagai (Kanji 永井 豪, Hiragana ながい ごう, Romaji Nagai Gou), real name Kiyoshi Nagai (永井 潔, Nagai Kiyoshi), is a Japanese cartoonist known internationally for his many works in Japanese comic books and animations, notably Mazinger Z, Devilman, Cutie Honey and UFO Robot Grendizer among many others. After the success of Harenchi Gakuen, Nagai, along with his brothers founded Dynamic Production on April, 1969.