Kamen Rider ZX has the distinction of being the first Rider who didn't star in his own TV series. The character debuted in an self-titled manga series which began serialization on Television Magazine's July issue in 1982 . ZX was then featured in a short radio drama broadcast during a special episode of All Night Nippon hosted by Shotaro Ishinomori on August 14, 1982 commemorating the character's official debut, before making his live-action debut in the TV Special Birth of the 10th! Kamen Riders All Together!!. Kamen Rider Spirits manga tells alternate story about ZX. Murasame is an evil rider of Badan Empire, having his memory wiped off by the evil Badan, Murasame becomes emotionless and fights against the nine Kamen Riders.
When Murasame regains his memory and realizes that his sister Shizuka was killed by Badan, he turns against them and eventually joins the Riders to destroy Badan. However in the manga, he refuses the title of Kamen Rider despite the fact the other Riders bless him with the title. The TV special plot was that Ryo Murasame and his sister were shot down while flying in the Amazon jungle by the Badan Empire and had both of them captured. Later, Badan kills his sister and turns Murasame into a cyborg warrior named ZX and brainwashes him. An accident enables him to regain his memory. Murasame becomes a Kamen Rider to avenge his sister. He mistakes both Kamen Rider Super-1 and Riderman as soldiers of Badan but later fights along with the other Kamen Riders. He later appears in All Riders vs. Dai-Shocker. Kota Nemoto provided his voice in that.