"I... believed in you. Komon-kun, I know you would be able to protect everyone."

―Riko's words in Komon's memories.
Riko Saida
Riko Saida
Ultra: Dark Faust
Age: {{{Age}}}
Gender: Female
Transformation Item None, transforms against her will
Home world: Earth (Ultra N Project Universe)
First Appearance: Ultraman Nexus Episode 1 Night Raid
Last Appearances Ultraman Nexus Episode 12 Lost Soul
Type: Anti-Hero
Family {{{Family}}}
Affiliation dark side (unwillingly)
Portrayed by Shion Nakamaru

Riko Saida (斎田リコ Saida Riko?) is a woman who appeared in Ultraman Nexus Series. She's Dark Faust's human host created by Dark Zagi.


Ultraman Nexus

Nexus komon riko

Komon and Riko

She was Kazuki Komon's girlfriend. She looked beautiful and kind but she was actually dead, killed with her family by Mizorogi Shinya a year before the series. Dark Zagi revived her to host his minion, Dark Faust.

As Faust's battles with Ultraman Nexus grew more violent, Mizorogi began to erase her memories, slowly driving her insane with her unsealed memories of death. When Komon and Himeya found her, Riko was seemingly all gone and she transformed into Faust, Faust and Nexus erected their subspace fields but Komon was also pulled into their private battlefield. Using him as a sort of hostage Faust overpowered Nexus and began to drain his energy. Komon unable to accept what became of his beloved, shot at the dark giant while calling Riko's name reawakening her and vanquishing the giant. Mizorogi was obviously upset at the turn of events and summoned Nosferu to kill Komon.

At the last minute Riko jumped over Komon, taking the blow to her back. The space beast was destroyed by Nexus but the damage was done. Komon found Riko's dying form. After telling him she loves him she dissipated into particles of Light. Later on Mizorogi would use her image as one of his illusions to torment Komon and to turn him to the dark side but the false spectre was driven away by Komon's own light from his love and memories of Riko. At the end of the series when Komon/Ultraman Noa defeated Dark Zagi in the final episode, she appeared in Komon's memories congratulating him.

Powers and abilites

  • Unlike the other Deunamists and Dark Ultra Hosts, Riko demonstrated no physical or mental superhuman abilities nor a transformation item/weapon. However as Dark Faust's host she showed remarkable stamina as she shared her injuries and healed very quickly between battles.


  • Her actress, Shion Nakamaru also appeared in  Ultra Galaxy Mega Monster Battle: Never Ending Odyssey as Commander Harlan the leader of the Alien Pedan Reionics Hunters and Dals superior. She also appeared in Ultraman Saga at the end as Takeru's mother.
  • Just like Yuko Minami, Beth O'Brian and Julie, she is the female host of an Ultra but is the second to share genders after Beth and is the first one whose counterpart is a Dark Ultra.
  • She gave Komon the bird-like keychain that he uses as his amulet. The amulet would later be what saved him from Mizorogi's attempts to control him and breaking him out of his depression. 
  • Riko Saida, or at least an alternate version of her, was rumored to return in the Ultraman Ginga: Theater Special due to her photograph with Takuya Negishi, Hikaru Raido's actor but was debunked after the movie's airing.
Human Hosts/Forms
Showa Heroes Shin Hayata | Dan Moroboshi | Hideki Goh | Seiji Hokuto | Yuko Minami | Kotaro Higashi | Gen Ohtori | Takeshi Yamato | Choichiro Hikari
Heisei Heroes Masaki Kazimori | Jack Shindo | Kenichi Kai | Genki Kagura | Katsuto Asahi | Daigo Madoka | Tsubasa Madoka | Amui | Ginga Yumeboshi | Shin Asuka | Gamu Takayama | Hiroya Fujimiya | Musashi Haruno | Julie | Kaito Touma | Mirai Hibino | Kazuya Serizawa | Ryuu Aihara | Shingo Sakomizu | Jin | Run | Shin Moroboshi | Nozomu Taiga | Hikaru Raido | Shou | Daichi Ozora | Gai Kurenai | Riku Asakura |Leito Igaguri
The Ultra Force Chuck Gavin | Beth O'Brian | Scott Masterson
Deunamists Shunichi Maki | Jun Himeya | Ren Senjyu | Nagi Saijyo | Kazuki Komon
Evil Ultra Hosts Keigo Masaki | Riko Saida | Shinya Mizorogi | Hiroyuki Misawa | Mitsuhiko Ishibori |
Other Hero Hosts Kyotaro Kagami | Goro Kirishima | Daisuke Misaki | Naoki Tachibana | Naoto Sho | Takeshi Todo | Sam Collins | Ai Kumasiro | Akira Kageyama | Nao | Tomoya Ichijouji | Daisuke Misaki (Stage)

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