Defeat Gomess! (ゴメスを倒せ! Gomesu o Taose!) is the first episode of Ultra Q.
While mining a train tunnel between Tokyo & Osaka, a construction crew unearths a strange object from within a huge underground cavern. Unable to identify the object, Jun and Yuriko venture into the tunnel to further investigate. In the meantime, Ippei and a reporter, with the help of a young boy named Liro, discover that the object is the egg of the giant bird called Litra. According to ancient legend, when Litra's egg is found, the giant monster Gomess will appear to destroy the Earth and consequently, Litra will rise up to defend against it. Unfortunately, Jun and Yuriko have already encountered Gomess while exploring in the caverns and are pursue, to the surface by the ferocious monster. Jiri and Ippei help to warm the egg, thereby accelerating the hatching process and soon Litra is born. Gomess emerges from the tunnel and the two monsters clash in battle After a vicious struggle, Litra uses its citronella acid ray to kill Gomess and then expires itself, having fulfilled its destiny.
- 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)
- Nakamura work manager (中村作業係長 Nakamura Sagyokakaricho): Nakajiro Tomita (富田 仲次郎 Tomita Nakajiro)
- Construction worker A (建設作業員A Kensetsusagyoin A): Senkichi Omura (大村 千吉 Omura Senkichi)（Credited by mistake for Senkichi Obayashi 大林千吉）
- Construction worker B (建設作業員B Kensetsusagyoin B): Ren Yamamoto (山本 廉 Yamamoto Ren)
- Chief priest of Dosen Temple (洞仙寺の住職 Dosenji no jushoku): Goro Morino (森野 五郎 Morino Goro)
- Jiro (次郎 Jiro): Junji Muraoka (村岡 順二 Muraoka Junji)
- Worker (作業員 Sagyoin): Hiroshi Sekita (関田 裕 Sekita Hiroshi)
- Scholar A (学者A Gakusya A): Keiichiro Katsumoto (勝本 圭一郎 Katsumoto Keiichiro)
- Scholar B (学者B Gakusya B): Keisuke Yamada (山田 圭介 Yamada Keisuke)
- Nitta reporter (新田記者 Nitta kisha): Tatsuyoshi Ehara (江原 達怡 Ehara Tatsuyoshi)
- Jiro (次郎 Jiro): Kiyoshi Komiyama (小宮山 清 Komiyama Kiyoshi) (Noncredit)
- Gomess (ゴメス Gomesu): Haruo Nakajima (中島 春雄 Nakajima Haruo)
Ultra Q Volume 1 features episodes 1-4, while the Total Natural Color Blu-ray features episodes 1-3.
- Gomess is infamously known for being created from a loosely disguised Godzilla suit. Around the time of Toho's film, Mothra vs. Godzilla. Eiji Tsuburaya was beginning his work on Ultra Q, and during the time of Ghidorah, the Three-Headed Monster, a new Godzilla suit was to be used for the film. However when Tsuburaya pleaded with Toho Studios to use the suit, The MosuGoji suit was reused for the film instead. Once filming for episode 1 of Ultra Q was finished, The Godzilla suit that was used to make Gomess would later be given back to Toho Studios to create the film Invasion of Astro-Monster.