Eiji Hino is a fictional character from the Japanese tokusatsu series Kamen Rider OOO. He is portrayed as a kind-hearted and determined individual who becomes the hero known as Kamen Rider OOO. Eiji possesses the ability to transform using the O Medals, which grant him various powers and forms to combat evil creatures called Greeeds. In the series, Eiji is driven by a desire to help others and protect humanity. He often collaborates with his friends, including Ankh, a Greeed who assists him in his battles. Eiji's character embodies themes of hope, friendship, and the struggle between good and evil.