Ryu Manatsu is a Japanese actor, singer and voice actor perhaps best known for his role as Gen Ohtori/Ultraman Leo in the Ultraman Series. He performed the show's theme song heard in the first 12 episodes as well.

| Title | ||||||
|---|---|---|---|---|---|---|
Akio Jissoji's Mystery File 3 | 0 | 1997-12-19 | 0.3986 | |||
Ultraman Saga | Gen Otori | 7 | 2012-03-24 | 1.5887 | ||
Outer Man | Chief of Staff Oshima | 6 | 2015-12-05 | 0.6546 | ||
Kaiju Mono | Doctor Saigo | 5.9 | 2016-07-16 | 0.538 | ||
Ultra Galaxy Legend Side Story: Ultraman Zero vs. Darklops Zero - Stage I: Cosmic Collision | Ultraman Leo (voice) | 7.3 | 2010-11-26 | 0.9782 | ||
Ultra Galaxy Legend Side Story: Ultraman Zero vs. Darklops Zero - Stage II: Zero's Suicide Zone | Ultraman Leo (voice) | 6.7 | 2010-12-22 | 0.9329 | ||
Ultra Fight Victory | Ultraman Leo (voice) | 8.3 | 2016-07-05 | 0.717 | ||
Fire Fox Tochionger Seven, the Movie: King of Hell | 0 | 2018-11-18 | 0.4915 | |||
Kindaichi Case Files: Death God Hospital Murder Case | 船长 | 10 | 1997-04-27 | 0.7433 | ||
Mighty Agent | 0 | 2001-07-25 | 0.3919 |