Urutoraman Gaia Sonona wa Gaia (1998– ) Online
- Original Title :
- Sonona wa Gaia
- Genre :
- TV Episode / Action / Sci-Fi
- Year :
- 1998–
- Directror :
- Chiaki Konaka,Kazuya Konaka
- Cast :
- Takeshi Yoshioka,Hiroyuki Watanabe,Takashi Ukaji
- Writer :
- Chiaki Konaka
- Type :
- TV Episode
- Rating :
- 6.2/10
Wondering whether or not Ultraman is a defense provided by the Earth itself, Gamu christens his alter-ego "Gaia." Shortly afterwards a metallic organism heads to Japan and XIG moves to intercept.
| Episode cast overview, first billed only: | |||
 | Takeshi Yoshioka | - | Gamu Takayama / Ultraman Gaia |
 | Hiroyuki Watanabe | - | Akio Ishimuro |
 | Takashi Ukaji | - | Seiichiro Tsutsumi |
| Eisuke Tsunoda | - | Michifumi Inoue |
| Masami Nakagami | - | Katsumi Kajio |
| Ai Hashimoto | - | Atsuko Sasaki |
| Maria Theresa Gow | - | Georgie Leland |
| Hiroshi Tsuburaya | - | Hajime Tsuburaya |
| Yukari Ishida | - | Reiko Yoshi |
| Shunsuke Gondo | - | Atsushi Koyama |
| Katsuhiko Hasegawa | - | Yasushi Kitada |
| Yusuke Sawaki | - | Satoshi Ogawara |
| Hiroaki Nishijima | - | Makoto |
| Tôgo Okumoto | - | Sato |
| Masashi Kagami | - | Nakaji |