"After officer Hayata was given the life of the alien from the M78 nebula, he has transformed himself using the Beta Capsule. He flies at the speed of Mach 5. He is an immortal man who destroys all enemies with massive power. Go! Our hero!"
- ―The Narrator, introducing Ultraman, the hero from Nebula M78.
Ultra Operation No.1 (ウルトラ作戦第一号 Urutora Sakusen Daiichigō) is the first episode of Ultraman.
While patrolling the skies on the night shift, Shin Hayata reports back to home base he has seen a U.F.O. An enormous red orb is chasing a blue orb across the night sky. As fate would have it, Hayata's ship accidentally collides with the red object just as the blue U.F.O. descends into a nearby lake. Hayata is saved by the strange alien inhabiting the red glowing vessel. From the Nebula M78, the benevolent being explains it was pursuing the monstrous pilot of the blue ship, Bemular, after it escaped being escorted to the Monster Graveyard. Merging with Hayata and giving him the Beta Capsule, the SSSP (Science Special Search-Party) member secretly becomes Ultraman whenever monsters or aliens threaten the Earth.
- Toshio Muramatsu (ムラマツ・トシオ Muramatsu Toshio): Akiji Kobayashi (小林 昭二 Kobayashi Akiji)
- Shin Hayata (ハヤタ シン Hayata Shin): Susumu Kurobe (黒部 進 Kurobe Susumu)
- Akiko Fuji (フジ アキコ Fuji Akiko): Hiroko Sakurai (櫻井 浩子 Sakurai Hiroko)
- Daisuke Arashi (アラシ・ダイスケ Arashi Daisuke): Sandayū Dokumamushi (毒蝮 三太夫 Dokumamushi Sandayū)
- Mitsuhiro Ide (イデ・ミツヒロ Ide Mitsuhiro): Masanari Nihei (二平 政成 Nihei Masanari)
- Isamu Hoshino (ホシノ・イサム Hoshino Isamu): Akihide Tsuwaza (津沢 彰秀 Tsuzawa Akihide)
- Ultraman (ウルトラマン Urutoraman): Masao Nakasone (中曽根雅夫 Nakasone Masao) (grunts), Nisashi Kondo (近藤久 Kondo Nisashi) (voice)
- Narrator (ナレーター Nareta): Koji Ishizaka (石坂浩二 Ishizaka Koji)
- Ultraman (ウルトラマン Urutoraman): Bin Furuya (古谷 敏 Toshi Furuya)
- Bemular (ベムラー Bemurā): Teruo Aragaki (新垣輝雄 Aragaki Teruo)
"Who's there? Who are you?"
"An inhabitant of Nebula M78?"
"He is a space monster that can only bring forth chaos and destruction like a devil. I apologize for what I did to you, officer Hayata, for this reason I will give my life to you."
"Your life? What will happen to you then?"
"Wait a second. You've been calling him "he", like a friend, but what's his name?"
"He doesn't have a name."
"Don't joke, Everyone has a name."
"Then let's see-- How about Ultraman?"
"Right, Ultraman. What do you think?"
"Well-- That's "ultra" good!"
- Ultraman Volume 1 features episodes 1-4.
- Ultraman: The Complete Series.
- The US DVD Release Ultraman: Here He Comes From the Sky features episodes 1-10.
- Mill Creek Entertainment released Ultraman - The Complete Series on Blu Ray + Digital in a standard set and a SteelBook Edition in the US on October 15, 2019 .
- This episode was later featured in New Ultraman Retsuden episode 144 "First Ultraman Advent! Ultra Operation No.1."