Ichiro Mizuki (水木 一郎, Mizuki Ichirō ), born Toshio Hayakawa (早川 俊夫, Hayakawa Toshi ) (born January 7, 1948), is a famous, highly prolific Japanese vocalist best known for his work on theme songs for Tokusatsu and Anime, having performed numerous theme songs for Japanese film, television, video and video games. He is referred to by fans and fellow performers alike as the aniki (アニキ, aniki? "big brother") of the anison, or anime music genre.