Goro and Goroh (五郎とゴロー Gorō to Gorō) is the second episode of Ultra Q.
Amagi Mountain (also known as Saru-yama or Monkey Mountain due to its indigenous monkey population) is discovered to be the home of a 50 meter tall giant monkey, after the animal had ingested green leaf walnuts laced with Helipron G from a nearby research facility (Helipron G, a hormone nutrient developed during World War II for the purpose of strengthening soldiers in battle is found to trigger rapid growth in monkeys following excessive consumption). The research facility's custodian, a young deaf mute man named Goroh, who had previously befriended the monkey and also named him Goro, now helps to find food to satisfy that animal's monstrous appetite. When Goroh is caught stealing provisions, however, he is arrested by the police and jailed. Soon, the giant monkey begins looking for his little friend and winds up enrage in the city streets. Having first publicized the giant monkey story for the Daily News, Editor Seki devises a plan to have Goroh feed his enormous pet narcotic-laced milk, so that the drugged animal can be safely transported to Iliyan Island, where similar giant monkeys were recently discovered
- Jun Manjome (万城目淳 Manjome Jun): Kenji Sahara (佐原 健二 Sahara Kenji)
- Yuriko Edogawa (江戸川由利子 Edogawa Yuriko): Hiroko Sakurai (桜井 浩子 Sakurai Hiroko)
- Ippei Togawa (戸川一平 Togawa Ippei): Yasuhiko Saijo (西條 康彦 Saijo Yasuhiko)
- Seki (関デスク Seki desk): Yoshibumi Tajima (田島 義文 Tajima Yoshibumi)
- Narrator (ナレーター Nareta): Koji Ishizaka (石坂 浩二 Ishizaka Koji)
- Ono (小野 Ono): Yoshio Tsuchiya (土屋 嘉男 Tsuchiya Yoshio)（Credited by mistake for Tsuchiya Yoshio 土屋嘉雄）
- Matsusaki (松崎 Matsusaki): Shigeki Ishida (石田 茂樹 Ishida Shigeki)
- Villager (村民 Sonmin): Akira Tani (谷 晃 Tani Akira)
- Ito reporter (伊藤記者 Ito kisha): Nadao Kirino (桐野 洋雄 Kirino Nadao)
- Goro (五郎 Goro): Kazuo Suzuki (鈴木 和夫 Suzuki Kazuo)
- Morishita (森下 Morishita): Masanari Nihei (二瓶 正也 Nihei Masanari)
- Hayashi reporter (林記者 Hayashi kisha): Hideo Shibuya (渋谷 英男 Shibuya Hideo)（Credited by mistake for Shibuya Hideo 渋谷英雄）
- Police officer (巡査 Junsa): Kamayuki Tsubono (坪野 鎌之 Tsubono Kamayuki)
- Armed Squad Leader (武装警官隊長 Buso keikan taicho): Ryusuke Saijo (西條 竜介 Saijo Ryusuke)
- Ropeway guide (ロープウェイ・ガイド Roopuwei gaido): Yoko Yano (矢野 陽子 Yano Yoko)
- Repoter (記者 Kisha): Yoshio Katsube (勝部 義夫 Katsube Yoshio) (Noncredit)
- Repoter (記者 Kisha): Haruo Suzuki (鈴木 治夫 Suzuki Haruo) (Noncredit)
- cop (警官 Keikan): Tamizo Asano (浅野 民三 Asano Tamizo) (Noncredit)
- villagerB (村民B Sonmin bi): Souji Ubukata (生方 壮二 Ubukata Souji) (Noncredit)
- Goro (ゴロー Goro): Yukio Fukutome (福留 幸夫 Fukutome Yukio)
Ultra Q Volume 1 features episodes 1-4, while the Total Natural Color Blu-ray features episodes 1-3.
- A proposed sequel was planned where Goro would fight a space monster, the title being Goro vs Space Monster, with the space monster's identity being that of Garamon.