Birth of a New Hero (新しいヒーローの誕生!! Atarashī hīrō no tanjō!!) is the 1st episode of The☆Ultraman.
Shortly after the Scientific Defense Guard had been assembled, ice burgs from the Antarctic region began to melt with one of them containing ancient monsters known as the Seagras. An ice burg containing a lone Seagra was intercepted by the Scientific Defense Guard only for it to hatch from its icy tomb within minutes. After a laser barrier failed to contain the monster, Seagra made his way toward an unsuspecting harbor before completely freezing it and the city it was in, completely turning it into an icy tundra. The Scientific Defense Guard attempted to fight off using their fighters only for three more members of his species to emerge from the ice to assist it. Once Choichiro's fighter crashed he used the Beam Flasher for the first time to transform into Ultraman Joneus. As the Scientific Defense Guard was caught by surprised, Joneus took the monsters on one by one and shortly into the fight managed to cause to of them to freeze each other. The other two Seagras teamed up on him with his color timer beginning to turn red, forcing him to use his Planium Ray on both of them, knocking them out and returning the monster to their frozen confinements.
- Choichiro Hikari (ヒカリ 超一郎 Hikari Chōichirō): Kei Tomiyama (富山 敬 Tomiyama Kei)
- Tetsuo Akiyama (アキヤマ 徹男 Akiyama Tetsuo): Kinya Morikawa (森川 公也 Morikawa Kinya)
- Mutsumi Hoshikawa (星川 ムツミ Hoshikawa Mutsumi): Sumi Shimamoto (島本 須美 Shimamoto Sumi)
- Hiroaki Tobe (トベ 博明 Tobe Hiroaki): Masanari Nihei (二瓶 正也 Nihei Masanari)
- Kei Marume (マルメ 敬 Marume Kei): Shingo Kanemoto (兼本 新吾 Kanemoto Shingo)
- Pigu (ピグ ): Junpei Takiguchi (滝口 順平 Takiguchi Junpei)
- Monkey (モンキ Monki): Shigeru Chiba (千葉 繁 Chiba Shigeru)
- Red King was originally supposed to appear in Seagra's place, but this was changed during production.
- The Ultraman Orb episode, "Cleanup of the Heart" is a tribute to this episode.