The Gorilla Puncher #13 is a giant mechanical punching machine which Foxy can pilot to use against his opponent in the Combat portion of the Davy Back Fight. The machine's punches are capable of being set on fire and are supposedly even capable of burning sea monsters.
The machine is a large rhombus cube in shape and has exactly twenty-five (twenty in the anime) large boxing gloves that extend outwards and can burst into flames on impact. Its cockpit resembles a gorilla's head and it runs on tank-like caterpillar tracks that are powered by bicycle pedals.
Noro Marble Oni Coach (ノロマボール鬼コーチ,Noro Mabōru Oni Kōchi?, literally meaning "Slow Marble Devil Coach"): Foxy traps his opponent in a chamber with the Gorilla Puncher coming towards them. At the same time, he reflects his Noro Noro Beams all over the chamber using its mirrored back wall and Mirror Racket. Even if his opponent manages to dodge all of the beams and punches, unless they think quickly they'll be eventually crushed against the back wall by the Gorilla Puncher. Luffy was able to counter this technique by smashing the mirror wall with his fist. This is called Slowpoke Ball Demon Coach in the Viz Manga.
Gorilla Punch Golden Hits (ゴリラパンチゴールデンヒッツ,Gorira Panchi Gōruden Hittsu?): Foxy punches his opponent with all of the Gorilla Puncher's flaming fists at once. This technique was powerful enough that it almost knocked Luffy out. This is called Gorilla Punch Solid Gold Hits in the Viz Manga.
Gorilla Punch Golden Kick (ゴリラパンチゴールデンキック,Gorira Panchi Gōruden Kikku?):
In episode 226, Luffy mistakenly called this machine, Gorilla Panties in the Japanese version and Gorilla Pants in the English version.