The Prince of Monsters: Part 1 (怪獣殿下 前篇 Kaijū Denka Zenpen) is the 26th episode of Ultraman. On the DVD release this episode was renamed His Majesty Monster, Part 1/The Monster Prince, Beginning.
Scientists capture a monster in order to put in on display at the World's Fair. Their attempt fails and the monster is on the loose. After the monster begins tunneling underground, the Science Patrol must track its location so they can prevent it from harming nearby populated areas.
However, when the monster (called Gohora in the English-language version) attracts the attention of Ultraman, inexplicably, he loses the Beta Capsule. A boy by the name of Hajime finds it. The narrator of the English-language version concludes the installment with these ominous words:
"Too weak to fight any longer, Ultraman must replenish his energy--but will he have enough to destroy Gohora?
"See the next thrilling episode of--ULTRAMAN!!!"
- 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)
- Ultraman (ウルトラマン Urutoraman): Bin Furuya (古谷 敏 Furuya Bin)
- Gomora (ゴモラKunio Suzuki (鈴木邦夫 Suzuki Kunio) ):
- Ultraman Volume 7 features Episodes 25-28.
- Ultraman The Complete Series features all episodes.
- This episode shares a similar name with a 1968 tokusatsu kaiju/dinosaur series.
- A Peguila costume was worn by one of the kids.
- When Arashi and the college group go to Johnson Island, they hear a roar that will be used for Muruchi.