Ryotaro Nogami is a fictional character from the Japanese tokusatsu series Kamen Rider Den-O. He is the main protagonist of the series, which aired from 2007 to 2008. Ryotaro is known for his kind-hearted and somewhat timid personality, often finding himself in unusual situations due to his ability to travel through time. In the series, Ryotaro becomes the host for the Den-O suit, allowing him to transform into the superhero Kamen Rider Den-O. He battles various enemies known as Imagin, who threaten the timeline. Throughout his journey, Ryotaro learns to be more confident and assertive, making him a relatable and endearing character.