Birth of Ultraman (ウルトラマン 誕生 Urutoraman Tanjō) is the pilot episode of Ultraman. It was initially produced as a stage show before being re-edited into a episode-like video.
- 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)
- Red King
- Alien Baltan
- Neronga (pre-filmed footage from episode 3)
- Birth of Ultraman was the first piece of media ever created to bear the "Ultraman" name.
- Though they don't appear, the roars of Ragon, Bemular, Magular and Toho's Gaira are heard during the monster brawl.
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